diff --git a/sensors/common/vts/2_X/VtsHalSensorsV2_XTargetTest.h b/sensors/common/vts/2_X/VtsHalSensorsV2_XTargetTest.h
index b381580..becc93c 100644
--- a/sensors/common/vts/2_X/VtsHalSensorsV2_XTargetTest.h
+++ b/sensors/common/vts/2_X/VtsHalSensorsV2_XTargetTest.h
@@ -52,8 +52,6 @@
 using ::android::hardware::sensors::V1_0::Vec3;
 using ::android::hardware::sensors::V2_1::implementation::convertToOldSensorInfos;
 using std::chrono::duration_cast;
-using std::chrono::microseconds;
-using std::chrono::milliseconds;
 using std::chrono::nanoseconds;
 
 using EventV1_0 = ::android::hardware::sensors::V1_0::Event;
@@ -91,7 +89,7 @@
     }
 
     void waitForFlushEvents(const std::vector<SensorInfoType>& sensorsToWaitFor,
-                            int32_t numCallsToFlush, milliseconds timeout) {
+                            int32_t numCallsToFlush, std::chrono::milliseconds timeout) {
         std::unique_lock<std::recursive_mutex> lock(mFlushMutex);
         mFlushCV.wait_for(lock, timeout,
                           [&] { return flushesReceived(sensorsToWaitFor, numCallsToFlush); });
@@ -102,7 +100,8 @@
         return mEventMap[sensorHandle];
     }
 
-    void waitForEvents(const std::vector<SensorInfoType>& sensorsToWaitFor, milliseconds timeout) {
+    void waitForEvents(const std::vector<SensorInfoType>& sensorsToWaitFor,
+                       std::chrono::milliseconds timeout) {
         std::unique_lock<std::recursive_mutex> lock(mEventMutex);
         mEventCV.wait_for(lock, timeout, [&] { return eventsReceived(sensorsToWaitFor); });
     }
@@ -472,7 +471,7 @@
     }
 
     // Wait for events to be written back to the Event FMQ
-    callback.waitForEvents(sensors, milliseconds(1000) /* timeout */);
+    callback.waitForEvents(sensors, std::chrono::milliseconds(1000) /* timeout */);
     getEnvironment()->unregisterCallback();
 
     for (const auto& s : sensors) {
@@ -623,7 +622,7 @@
     }
 
     // Wait up to one second for the flush events
-    callback.waitForFlushEvents(sensors, flushCalls, milliseconds(1000) /* timeout */);
+    callback.waitForFlushEvents(sensors, flushCalls, std::chrono::milliseconds(1000) /* timeout */);
 
     // Deactivate all sensors after waiting for flush events so pending flush events are not
     // abandoned by the HAL.
@@ -748,8 +747,8 @@
 }
 
 TEST_P(SensorsHidlTest, NoStaleEvents) {
-    constexpr milliseconds kFiveHundredMs(500);
-    constexpr milliseconds kOneSecond(1000);
+    constexpr std::chrono::milliseconds kFiveHundredMs(500);
+    constexpr std::chrono::milliseconds kOneSecond(1000);
 
     // Register the callback to receive sensor events
     EventCallback callback;
@@ -757,10 +756,11 @@
 
     // This test is not valid for one-shot, on-change or special-report-mode sensors
     const std::vector<SensorInfoType> sensors = getNonOneShotAndNonOnChangeAndNonSpecialSensors();
-    milliseconds maxMinDelay(0);
+    std::chrono::milliseconds maxMinDelay(0);
     for (const SensorInfoType& sensor : sensors) {
-        milliseconds minDelay = duration_cast<milliseconds>(microseconds(sensor.minDelay));
-        maxMinDelay = milliseconds(std::max(maxMinDelay.count(), minDelay.count()));
+        std::chrono::milliseconds minDelay = duration_cast<std::chrono::milliseconds>(
+                std::chrono::microseconds(sensor.minDelay));
+        maxMinDelay = std::chrono::milliseconds(std::max(maxMinDelay.count(), minDelay.count()));
     }
 
     // Activate the sensors so that they start generating events
@@ -787,7 +787,7 @@
     }
 
     // Allow some time to pass, reset the callback, then reactivate the sensors
-    usleep(duration_cast<microseconds>(kOneSecond + (5 * maxMinDelay)).count());
+    usleep(duration_cast<std::chrono::microseconds>(kOneSecond + (5 * maxMinDelay)).count());
     callback.reset();
     activateAllSensors(true);
     callback.waitForEvents(sensors, kFiveHundredMs + (5 * maxMinDelay));
@@ -815,9 +815,10 @@
         // Ensure that the first event received is not stale by ensuring that its timestamp is
         // sufficiently different from the previous event
         const EventType newEvent = events.front();
-        milliseconds delta = duration_cast<milliseconds>(
+        std::chrono::milliseconds delta = duration_cast<std::chrono::milliseconds>(
                 nanoseconds(newEvent.timestamp - lastEventTimestampMap[sensor.sensorHandle]));
-        milliseconds sensorMinDelay = duration_cast<milliseconds>(microseconds(sensor.minDelay));
+        std::chrono::milliseconds sensorMinDelay = duration_cast<std::chrono::milliseconds>(
+                std::chrono::microseconds(sensor.minDelay));
         ASSERT_GE(delta, kFiveHundredMs + (3 * sensorMinDelay));
     }
 }
diff --git a/sensors/common/vts/utils/Android.bp b/sensors/common/vts/utils/Android.bp
index b35280a..ab3984c 100644
--- a/sensors/common/vts/utils/Android.bp
+++ b/sensors/common/vts/utils/Android.bp
@@ -35,6 +35,7 @@
         "libbinder_ndk",
         "libutils",
         "libvndksupport",
+        "libui",
     ],
     static_libs: [
         "libaidlcommonsupport",
@@ -50,9 +51,6 @@
         "android.hardware.graphics.common-ndk_shared",
     ],
     cflags: ["-DLOG_TAG=\"sensors_hidl_hal_test\""],
-    srcs: [
-        "GrallocWrapper.cpp",
-    ],
     export_include_dirs: [
         "include",
     ],
@@ -64,6 +62,7 @@
         "libbinder_ndk",
         "libutils",
         "libvndksupport",
+        "libui",
     ],
     static_libs: [
         "android.hardware.sensors@1.0",
@@ -71,13 +70,4 @@
         "android.hardware.sensors@2.1",
         "libaidlcommonsupport",
     ],
-    whole_static_libs: [
-        "android.hardware.graphics.allocator@2.0",
-        "android.hardware.graphics.allocator@3.0",
-        "android.hardware.graphics.allocator@4.0",
-        "android.hardware.graphics.mapper@2.0",
-        "android.hardware.graphics.mapper@2.1",
-        "android.hardware.graphics.mapper@3.0",
-        "android.hardware.graphics.mapper@4.0",
-    ],
 }
diff --git a/sensors/common/vts/utils/GrallocWrapper.cpp b/sensors/common/vts/utils/GrallocWrapper.cpp
deleted file mode 100644
index a15e7fe..0000000
--- a/sensors/common/vts/utils/GrallocWrapper.cpp
+++ /dev/null
@@ -1,355 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#include "GrallocWrapper.h"
-
-#include <aidl/android/hardware/graphics/allocator/IAllocator.h>
-#include <aidlcommonsupport/NativeHandle.h>
-#include <android/binder_manager.h>
-#include <android/hardware/graphics/allocator/2.0/IAllocator.h>
-#include <android/hardware/graphics/allocator/3.0/IAllocator.h>
-#include <android/hardware/graphics/allocator/4.0/IAllocator.h>
-#include <android/hardware/graphics/mapper/2.0/IMapper.h>
-#include <android/hardware/graphics/mapper/2.1/IMapper.h>
-#include <android/hardware/graphics/mapper/3.0/IMapper.h>
-#include <android/hardware/graphics/mapper/4.0/IMapper.h>
-
-#include <utils/Log.h>
-
-#include <cinttypes>
-#include <memory>
-#include <type_traits>
-
-using IAllocatorAidl = ::aidl::android::hardware::graphics::allocator::IAllocator;
-using IAllocator2 = ::android::hardware::graphics::allocator::V2_0::IAllocator;
-using IAllocator3 = ::android::hardware::graphics::allocator::V3_0::IAllocator;
-using IAllocator4 = ::android::hardware::graphics::allocator::V4_0::IAllocator;
-using IMapper2 = ::android::hardware::graphics::mapper::V2_0::IMapper;
-using IMapper2_1 = ::android::hardware::graphics::mapper::V2_1::IMapper;
-using IMapper3 = ::android::hardware::graphics::mapper::V3_0::IMapper;
-using IMapper4 = ::android::hardware::graphics::mapper::V4_0::IMapper;
-
-using Error2 = ::android::hardware::graphics::mapper::V2_0::Error;
-using Error3 = ::android::hardware::graphics::mapper::V3_0::Error;
-using Error4 = ::android::hardware::graphics::mapper::V4_0::Error;
-
-using ::aidl::android::hardware::common::NativeHandle;
-using ::aidl::android::hardware::graphics::allocator::AllocationResult;
-
-using ::android::hardware::graphics::common::V1_0::BufferUsage;
-using ::android::hardware::graphics::common::V1_0::PixelFormat;
-
-using ::android::hardware::hidl_handle;
-using ::android::hardware::hidl_string;
-using ::android::hardware::hidl_vec;
-
-namespace android {
-
-// Since we use the same APIs across allocator/mapper HALs but they have major
-// version differences (meaning they are not related through inheritance), we
-// create a common interface abstraction for the IAllocator + IMapper combination
-// (major versions need to match in the current HALs, e.g. IAllocator 3.0 needs to
-// be paired with IMapper 3.0, so these are tied together)
-class IGrallocHalWrapper {
-  public:
-    virtual ~IGrallocHalWrapper() = default;
-
-    // IAllocator
-    virtual native_handle_t* allocate(uint32_t size) = 0;
-    virtual void freeBuffer(native_handle_t* bufferHandle) = 0;
-
-    // IMapper
-    virtual void* lock(native_handle_t* bufferHandle) = 0;
-    virtual void unlock(native_handle_t* bufferHandle) = 0;
-};
-
-namespace {
-
-bool failed(Error2 error) {
-    return (error != Error2::NONE);
-}
-bool failed(Error3 error) {
-    return (error != Error3::NONE);
-}
-bool failed(Error4 error) {
-    return (error != Error4::NONE);
-}
-
-template <typename>
-struct FirstArg;
-
-// Template specialization for pointer to a non-static member function, which exposes
-// the type of the first argument given to said function
-template <typename ReturnType, typename ClassT, typename Arg1, typename... OtherArgs>
-struct FirstArg<ReturnType (ClassT::*)(Arg1, OtherArgs...)> {
-    using type = Arg1;
-};
-
-// Alias to FirstArg which also removes any reference type and const associated
-template <typename T>
-using BaseTypeOfFirstArg = typename std::remove_const<
-        typename std::remove_reference<typename FirstArg<T>::type>::type>::type;
-
-// Since all the type and function names are the same for the things we use across the major HAL
-// versions, we use template magic to avoid repeating ourselves.
-template <typename AllocatorT, typename MapperT,
-          template <typename> typename AllocatorWrapperT = sp>
-class GrallocHalWrapper : public IGrallocHalWrapper {
-  public:
-    GrallocHalWrapper(const AllocatorWrapperT<AllocatorT>& allocator, const sp<MapperT>& mapper)
-        : mAllocator(allocator), mMapper(mapper) {
-        if (mapper->isRemote()) {
-            ALOGE("Mapper is in passthrough mode");
-        }
-    }
-
-    virtual native_handle_t* allocate(uint32_t size) override;
-    virtual void freeBuffer(native_handle_t* bufferHandle) override;
-
-    virtual void* lock(native_handle_t* bufferHandle) override;
-    virtual void unlock(native_handle_t* bufferHandle) override;
-
-  private:
-    static constexpr uint64_t kBufferUsage =
-            static_cast<uint64_t>(BufferUsage::SENSOR_DIRECT_DATA | BufferUsage::CPU_READ_OFTEN |
-                                  BufferUsage::CPU_WRITE_RARELY);
-    AllocatorWrapperT<AllocatorT> mAllocator;
-    sp<MapperT> mMapper;
-
-    // v2.0 and v3.0 use vec<uint32_t> for BufferDescriptor, but v4.0 uses vec<uint8_t>, so use
-    // some template magic to deduce the right type based off of the first argument to allocate(),
-    // which is always the version-specific BufferDescriptor type
-    typedef BaseTypeOfFirstArg<decltype(&AllocatorT::allocate)> BufferDescriptorT;
-
-    BufferDescriptorT getDescriptor(uint32_t size);
-    native_handle_t* importBuffer(const hidl_handle& rawHandle);
-};
-
-template <>
-native_handle_t* GrallocHalWrapper<IAllocatorAidl, IMapper4, std::shared_ptr>::allocate(
-        uint32_t size) {
-    constexpr uint32_t kBufferCount = 1;
-    BufferDescriptorT descriptor = getDescriptor(size);
-    native_handle_t* bufferHandle = nullptr;
-
-    AllocationResult result;
-    auto status = mAllocator->allocate(descriptor, kBufferCount, &result);
-    if (!status.isOk()) {
-        status_t error = status.getExceptionCode();
-        ALOGE("Failed to allocate buffer: %" PRId32, static_cast<int32_t>(error));
-    } else if (result.buffers.size() != kBufferCount) {
-        ALOGE("Invalid buffer array size (got %zu, expected %" PRIu32 ")", result.buffers.size(),
-              kBufferCount);
-    } else {
-        // Convert from AIDL NativeHandle to native_handle_t to hidl_handle
-        hidl_handle hidlHandle;
-        hidlHandle.setTo(dupFromAidl(result.buffers[0]), /*shouldOwn*/ true);
-        bufferHandle = importBuffer(hidlHandle);
-    }
-
-    return bufferHandle;
-}
-
-template <typename AllocatorT, typename MapperT, template <typename> typename AllocatorWrapperT>
-native_handle_t* GrallocHalWrapper<AllocatorT, MapperT, AllocatorWrapperT>::allocate(
-        uint32_t size) {
-    constexpr uint32_t kBufferCount = 1;
-    BufferDescriptorT descriptor = getDescriptor(size);
-    native_handle_t* bufferHandle = nullptr;
-
-    auto callback = [&](auto error, uint32_t /*stride*/, const hidl_vec<hidl_handle>& buffers) {
-        if (failed(error)) {
-            ALOGE("Failed to allocate buffer: %" PRId32, static_cast<int32_t>(error));
-        } else if (buffers.size() != kBufferCount) {
-            ALOGE("Invalid buffer array size (got %zu, expected %" PRIu32 ")", buffers.size(),
-                  kBufferCount);
-        } else {
-            bufferHandle = importBuffer(buffers[0]);
-        }
-    };
-
-    mAllocator->allocate(descriptor, kBufferCount, callback);
-    return bufferHandle;
-}
-
-template <typename AllocatorT, typename MapperT, template <typename> typename AllocatorWrapperT>
-void GrallocHalWrapper<AllocatorT, MapperT, AllocatorWrapperT>::freeBuffer(
-        native_handle_t* bufferHandle) {
-    auto error = mMapper->freeBuffer(bufferHandle);
-    if (!error.isOk() || failed(error)) {
-        ALOGE("Failed to free buffer %p", bufferHandle);
-    }
-}
-
-template <typename AllocatorT, typename MapperT, template <typename> typename AllocatorWrapperT>
-typename GrallocHalWrapper<AllocatorT, MapperT, AllocatorWrapperT>::BufferDescriptorT
-GrallocHalWrapper<AllocatorT, MapperT, AllocatorWrapperT>::getDescriptor(uint32_t size) {
-    typename MapperT::BufferDescriptorInfo descriptorInfo = {
-            .width = size,
-            .height = 1,
-            .layerCount = 1,
-            .format = static_cast<decltype(descriptorInfo.format)>(PixelFormat::BLOB),
-            .usage = kBufferUsage,
-    };
-
-    BufferDescriptorT descriptor;
-    auto callback = [&](auto error, const BufferDescriptorT& tmpDescriptor) {
-        if (failed(error)) {
-            ALOGE("Failed to create descriptor: %" PRId32, static_cast<int32_t>(error));
-        } else {
-            descriptor = tmpDescriptor;
-        }
-    };
-
-    mMapper->createDescriptor(descriptorInfo, callback);
-    return descriptor;
-}
-
-template <typename AllocatorT, typename MapperT, template <typename> typename AllocatorWrapperT>
-native_handle_t* GrallocHalWrapper<AllocatorT, MapperT, AllocatorWrapperT>::importBuffer(
-        const hidl_handle& rawHandle) {
-    native_handle_t* bufferHandle = nullptr;
-
-    mMapper->importBuffer(rawHandle, [&](auto error, void* tmpBuffer) {
-        if (failed(error)) {
-            ALOGE("Failed to import buffer %p: %" PRId32, rawHandle.getNativeHandle(),
-                  static_cast<int32_t>(error));
-        } else {
-            bufferHandle = static_cast<native_handle_t*>(tmpBuffer);
-        }
-    });
-
-    return bufferHandle;
-}
-
-template <typename AllocatorT, typename MapperT, template <typename> typename AllocatorWrapperT>
-void* GrallocHalWrapper<AllocatorT, MapperT, AllocatorWrapperT>::lock(
-        native_handle_t* bufferHandle) {
-    // Per the HAL, all-zeros Rect means the entire buffer
-    typename MapperT::Rect accessRegion = {};
-    hidl_handle acquireFenceHandle;  // No fence needed, already safe to lock
-
-    void* data = nullptr;
-    mMapper->lock(bufferHandle, kBufferUsage, accessRegion, acquireFenceHandle,
-                  [&](auto error, void* tmpData, ...) {  // V3/4 pass extra args we don't use
-                      if (failed(error)) {
-                          ALOGE("Failed to lock buffer %p: %" PRId32, bufferHandle,
-                                static_cast<int32_t>(error));
-                      } else {
-                          data = tmpData;
-                      }
-                  });
-
-    return data;
-}
-
-template <typename AllocatorT, typename MapperT, template <typename> typename AllocatorWrapperT>
-void GrallocHalWrapper<AllocatorT, MapperT, AllocatorWrapperT>::unlock(
-        native_handle_t* bufferHandle) {
-    mMapper->unlock(bufferHandle, [&](auto error, const hidl_handle& /*releaseFence*/) {
-        if (failed(error)) {
-            ALOGE("Failed to unlock buffer %p: %" PRId32, bufferHandle,
-                  static_cast<int32_t>(error));
-        }
-    });
-}
-
-}  // anonymous namespace
-
-GrallocWrapper::GrallocWrapper() {
-    sp<IAllocator4> allocator4 = IAllocator4::getService();
-    sp<IMapper4> mapper4 = IMapper4::getService();
-
-    const auto kAllocatorSvc = std::string(IAllocatorAidl::descriptor) + "/default";
-    std::shared_ptr<IAllocatorAidl> allocatorAidl;
-    if (AServiceManager_isDeclared(kAllocatorSvc.c_str())) {
-        allocatorAidl = IAllocatorAidl::fromBinder(
-                ndk::SpAIBinder(AServiceManager_checkService(kAllocatorSvc.c_str())));
-    }
-
-    // As of T, AIDL Allocator is supported only with HIDL Mapper4
-    // (ref: VtsHalGraphicsAllocatorAidl_TargetTest.cpp)
-    if (allocatorAidl != nullptr && mapper4 != nullptr) {
-        ALOGD("Using AIDL IAllocator + HIDL IMapper v4.0");
-        mGrallocHal = std::unique_ptr<IGrallocHalWrapper>(
-                new GrallocHalWrapper<IAllocatorAidl, IMapper4, std::shared_ptr>(allocatorAidl,
-                                                                                 mapper4));
-    } else if (allocator4 != nullptr && mapper4 != nullptr) {
-        ALOGD("AIDL IAllocator not found, using HIDL IAllocator/IMapper v4.0");
-        mGrallocHal = std::unique_ptr<IGrallocHalWrapper>(
-                new GrallocHalWrapper<IAllocator4, IMapper4>(allocator4, mapper4));
-    } else {
-        ALOGD("Graphics HALs 4.0 not found (allocator %d mapper %d), falling back to 3.0",
-              (allocator4 != nullptr), (mapper4 != nullptr));
-
-        sp<IAllocator3> allocator3 = IAllocator3::getService();
-        sp<IMapper3> mapper3 = IMapper3::getService();
-
-        if (allocator3 != nullptr && mapper3 != nullptr) {
-            mGrallocHal = std::unique_ptr<IGrallocHalWrapper>(
-                    new GrallocHalWrapper<IAllocator3, IMapper3>(allocator3, mapper3));
-        } else {
-            ALOGD("Graphics HALs 3.0 not found (allocator %d mapper %d), falling back to 2.x",
-                  (allocator3 != nullptr), (mapper3 != nullptr));
-
-            sp<IAllocator2> allocator2 = IAllocator2::getService();
-            sp<IMapper2> mapper2 = IMapper2_1::getService();
-            if (mapper2 == nullptr) {
-                mapper2 = IMapper2::getService();
-            }
-
-            if (allocator2 != nullptr && mapper2 != nullptr) {
-                mGrallocHal = std::unique_ptr<IGrallocHalWrapper>(
-                        new GrallocHalWrapper<IAllocator2, IMapper2>(allocator2, mapper2));
-            } else {
-                ALOGE("Couldn't open graphics HALs (2.x allocator %d mapper %d)",
-                      (allocator2 != nullptr), (mapper2 != nullptr));
-            }
-        }
-    }
-}
-
-GrallocWrapper::~GrallocWrapper() {
-    for (auto bufferHandle : mAllocatedBuffers) {
-        mGrallocHal->unlock(bufferHandle);
-        mGrallocHal->freeBuffer(bufferHandle);
-    }
-    mAllocatedBuffers.clear();
-}
-
-std::pair<native_handle_t*, void*> GrallocWrapper::allocate(uint32_t size) {
-    native_handle_t* bufferHandle = mGrallocHal->allocate(size);
-    void* buffer = nullptr;
-    if (bufferHandle) {
-        buffer = mGrallocHal->lock(bufferHandle);
-        if (buffer) {
-            mAllocatedBuffers.insert(bufferHandle);
-        } else {
-            mGrallocHal->freeBuffer(bufferHandle);
-            bufferHandle = nullptr;
-        }
-    }
-    return std::make_pair<>(bufferHandle, buffer);
-}
-
-void GrallocWrapper::freeBuffer(native_handle_t* bufferHandle) {
-    if (mAllocatedBuffers.erase(bufferHandle)) {
-        mGrallocHal->unlock(bufferHandle);
-        mGrallocHal->freeBuffer(bufferHandle);
-    }
-}
-
-}  // namespace android
diff --git a/sensors/common/vts/utils/include/sensors-vts-utils/GrallocWrapper.h b/sensors/common/vts/utils/include/sensors-vts-utils/GrallocWrapper.h
deleted file mode 100644
index ebbcb2c..0000000
--- a/sensors/common/vts/utils/include/sensors-vts-utils/GrallocWrapper.h
+++ /dev/null
@@ -1,58 +0,0 @@
-/*
- * Copyright (C) 2017 The Android Open Source Project
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *      http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-#pragma once
-
-#include <utils/NativeHandle.h>
-
-#include <memory>
-#include <string>
-#include <unordered_set>
-#include <utility>
-
-namespace android {
-
-class IGrallocHalWrapper;
-
-// Reference: hardware/interfaces/graphics/mapper/2.0/vts/functional/
-class GrallocWrapper {
-   public:
-    GrallocWrapper();
-    ~GrallocWrapper();
-
-    // After constructing this object, this function must be called to check the result. If it
-    // returns false, other methods are not safe to call.
-    bool isInitialized() const { return (mGrallocHal != nullptr); };
-
-    // Allocates a gralloc buffer suitable for direct channel sensors usage with the given size.
-    // The buffer should be freed using freeBuffer when it's not needed anymore; otherwise it'll
-    // be freed when this object is destroyed.
-    // Returns a handle to the buffer, and a CPU-accessible pointer for reading. On failure, both
-    // will be set to nullptr.
-    std::pair<native_handle_t*, void*> allocate(uint32_t size);
-
-    // Releases a gralloc buffer previously returned by allocate()
-    void freeBuffer(native_handle_t* bufferHandle);
-
-  private:
-    std::unique_ptr<IGrallocHalWrapper> mGrallocHal;
-
-    // Keep track of all cloned and imported handles.  When a test fails with
-    // ASSERT_*, the destructor will free the handles for the test.
-    std::unordered_set<native_handle_t*> mAllocatedBuffers;
-};
-
-}  // namespace android
diff --git a/sensors/common/vts/utils/include/sensors-vts-utils/SensorsTestSharedMemory.h b/sensors/common/vts/utils/include/sensors-vts-utils/SensorsTestSharedMemory.h
index 39084a4..b96adb3 100644
--- a/sensors/common/vts/utils/include/sensors-vts-utils/SensorsTestSharedMemory.h
+++ b/sensors/common/vts/utils/include/sensors-vts-utils/SensorsTestSharedMemory.h
@@ -17,7 +17,11 @@
 #ifndef ANDROID_SENSORS_TEST_SHARED_MEMORY_H
 #define ANDROID_SENSORS_TEST_SHARED_MEMORY_H
 
-#include "GrallocWrapper.h"
+#include <aidl/android/hardware/graphics/common/BufferUsage.h>
+#include <aidl/android/hardware/graphics/common/PixelFormat.h>
+#include <ui/GraphicBuffer.h>
+#include <ui/GraphicBufferAllocator.h>
+#include <ui/GraphicBufferMapper.h>
 
 #include <android-base/macros.h>
 #include <log/log.h>
@@ -28,6 +32,8 @@
 #include <cutils/ashmem.h>
 
 using namespace ::android::hardware::sensors::V1_0;
+using ::aidl::android::hardware::graphics::common::BufferUsage;
+using ::aidl::android::hardware::graphics::common::PixelFormat;
 
 template <class SensorTypeVersion, class EventType>
 class SensorsTestSharedMemory {
@@ -48,11 +54,20 @@
     }
 
     SharedMemInfo getSharedMemInfo() const {
-        SharedMemInfo mem = {.type = mType,
-                             .format = SharedMemFormat::SENSORS_EVENT,
-                             .size = static_cast<uint32_t>(mSize),
-                             .memoryHandle = mNativeHandle};
-        return mem;
+        if (mType == SharedMemType::GRALLOC) {
+            SharedMemInfo mem = {.type = mType,
+                                 .format = SharedMemFormat::SENSORS_EVENT,
+                                 .size = static_cast<uint32_t>(mSize),
+                                 .memoryHandle = mBufferHandle};
+            return mem;
+
+        } else {
+            SharedMemInfo mem = {.type = mType,
+                                 .format = SharedMemFormat::SENSORS_EVENT,
+                                 .size = static_cast<uint32_t>(mSize),
+                                 .memoryHandle = mNativeHandle};
+            return mem;
+        }
     }
     char* getBuffer() const { return mBuffer; }
     size_t getSize() const { return mSize; }
@@ -128,17 +143,26 @@
             }
             case SharedMemType::GRALLOC: {
                 if (mSize != 0) {
-                    mGrallocWrapper->freeBuffer(mNativeHandle);
-                    mNativeHandle = nullptr;
+                    android::status_t status =
+                            android::GraphicBufferAllocator::get().free(mBufferHandle);
+                    if (status != android::OK) {
+                        ALOGE("SensorsAidlTestSharedMemory Gralloc failed to free buffer. Status: "
+                              "%s",
+                              android::statusToString(status).c_str());
+                    }
+                    mBufferHandle = nullptr;
+                    mBuffer = nullptr;
                     mSize = 0;
                 }
                 break;
             }
             default: {
-                if (mNativeHandle != nullptr || mSize != 0 || mBuffer != nullptr) {
-                    ALOGE("SensorsTestSharedMemory %p not properly destructed: "
-                          "type %d, native handle %p, size %zu, buffer %p",
-                          this, static_cast<int>(mType), mNativeHandle, mSize, mBuffer);
+                if (mNativeHandle != nullptr || mSize != 0 || mBuffer != nullptr ||
+                    mBufferHandle != nullptr) {
+                    ALOGE("SensorsAidlTestSharedMemory %p not properly destructed: "
+                          "type %d, native handle %p, size %zu, buffer %p, buffer handle %p",
+                          this, static_cast<int>(mType), mNativeHandle, mSize, mBuffer,
+                          mBufferHandle);
                 }
                 break;
             }
@@ -171,14 +195,33 @@
                 break;
             }
             case SharedMemType::GRALLOC: {
-                mGrallocWrapper = std::make_unique<::android::GrallocWrapper>();
-                if (!mGrallocWrapper->isInitialized()) {
+                static constexpr uint64_t kBufferUsage =
+                        static_cast<uint64_t>(BufferUsage::SENSOR_DIRECT_DATA) |
+                        static_cast<uint64_t>(BufferUsage::CPU_READ_OFTEN) |
+                        static_cast<uint64_t>(BufferUsage::CPU_WRITE_RARELY);
+
+                uint32_t stride = 0;
+                buffer_handle_t bufferHandle;
+                android::status_t status = android::GraphicBufferAllocator::get().allocate(
+                        size, 1, static_cast<int>(PixelFormat::BLOB), 1, kBufferUsage,
+                        &bufferHandle, &stride, "SensorVts");
+                if (status != android::OK) {
+                    ALOGE("SensorsAidlTestSharedMemory failed to allocate memory. Status: %s",
+                          android::statusToString(status).c_str());
                     break;
                 }
-
-                std::pair<native_handle_t*, void*> buf = mGrallocWrapper->allocate(size);
-                handle = buf.first;
-                buffer = static_cast<char*>(buf.second);
+                // Per the HAL, all-zeros Rect means the entire buffer
+                android::Rect rect = {0, 0, 0, 0};
+                void* ret;
+                status = android::GraphicBufferMapper::get().lock(bufferHandle, kBufferUsage, rect,
+                                                                  &ret);
+                if (status != android::OK) {
+                    ALOGE("SensorsAidlTestSharedMemory failed to import buffer: Status: %s",
+                          android::statusToString(status).c_str());
+                } else {
+                    buffer = static_cast<char*>(ret);
+                    mBufferHandle = bufferHandle;
+                }
                 break;
             }
             default:
@@ -194,9 +237,9 @@
 
     SharedMemType mType;
     native_handle_t* mNativeHandle;
+    buffer_handle_t mBufferHandle;
     size_t mSize;
     char* mBuffer;
-    std::unique_ptr<::android::GrallocWrapper> mGrallocWrapper;
 
     DISALLOW_COPY_AND_ASSIGN(SensorsTestSharedMemory);
 };