[HWUI] remove libui from HWUI's dependencies

Bug: 136263238
Test: builds
Test: interact with device
Change-Id: I18540f78a4ee5ffcc30c96ff7862480e1d8fe50a
diff --git a/libs/hwui/renderthread/ReliableSurface.h b/libs/hwui/renderthread/ReliableSurface.h
index 58cd067..c80a7ea 100644
--- a/libs/hwui/renderthread/ReliableSurface.h
+++ b/libs/hwui/renderthread/ReliableSurface.h
@@ -20,6 +20,7 @@
 #include <apex/window.h>
 #include <utils/Errors.h>
 #include <utils/Macros.h>
+#include <utils/NdkUtils.h>
 #include <utils/StrongPointer.h>
 
 #include <memory>
@@ -56,8 +57,7 @@
 
     uint64_t mUsage = AHARDWAREBUFFER_USAGE_GPU_FRAMEBUFFER;
     AHardwareBuffer_Format mFormat = AHARDWAREBUFFER_FORMAT_R8G8B8A8_UNORM;
-    std::unique_ptr<AHardwareBuffer, void (*)(AHardwareBuffer*)> mScratchBuffer{
-            nullptr, AHardwareBuffer_release};
+    UniqueAHardwareBuffer mScratchBuffer;
     ANativeWindowBuffer* mReservedBuffer = nullptr;
     base::unique_fd mReservedFenceFd;
     bool mHasDequeuedBuffer = false;