diff --git a/services/surfaceflinger/DisplayHardware/DisplaySurface.h b/services/surfaceflinger/DisplayHardware/DisplaySurface.h
deleted file mode 100644
index f744f5c..0000000
--- a/services/surfaceflinger/DisplayHardware/DisplaySurface.h
+++ /dev/null
@@ -1,84 +0,0 @@
-/*
- * Copyright 2013 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.
- */
-
-#ifndef ANDROID_SF_DISPLAY_SURFACE_H
-#define ANDROID_SF_DISPLAY_SURFACE_H
-
-#include <utils/Errors.h>
-#include <utils/RefBase.h>
-#include <utils/StrongPointer.h>
-
-// ---------------------------------------------------------------------------
-namespace android {
-// ---------------------------------------------------------------------------
-
-class Fence;
-class IGraphicBufferProducer;
-class String8;
-
-class DisplaySurface : public virtual RefBase {
-public:
-    // beginFrame is called at the beginning of the composition loop, before
-    // the configuration is known. The DisplaySurface should do anything it
-    // needs to do to enable HWComposer to decide how to compose the frame.
-    // We pass in mustRecompose so we can keep VirtualDisplaySurface's state
-    // machine happy without actually queueing a buffer if nothing has changed.
-    virtual status_t beginFrame(bool mustRecompose) = 0;
-
-    // prepareFrame is called after the composition configuration is known but
-    // before composition takes place. The DisplaySurface can use the
-    // composition type to decide how to manage the flow of buffers between
-    // GLES and HWC for this frame.
-    enum CompositionType {
-        COMPOSITION_UNKNOWN = 0,
-        COMPOSITION_GLES    = 1,
-        COMPOSITION_HWC     = 2,
-        COMPOSITION_MIXED   = COMPOSITION_GLES | COMPOSITION_HWC
-    };
-    virtual status_t prepareFrame(CompositionType compositionType) = 0;
-
-    // Inform the surface that GLES composition is complete for this frame, and
-    // the surface should make sure that HWComposer has the correct buffer for
-    // this frame. Some implementations may only push a new buffer to
-    // HWComposer if GLES composition took place, others need to push a new
-    // buffer on every frame.
-    //
-    // advanceFrame must be followed by a call to  onFrameCommitted before
-    // advanceFrame may be called again.
-    virtual status_t advanceFrame() = 0;
-
-    // onFrameCommitted is called after the frame has been committed to the
-    // hardware composer. The surface collects the release fence for this
-    // frame's buffer.
-    virtual void onFrameCommitted() = 0;
-
-    virtual void dumpAsString(String8& result) const = 0;
-
-    virtual void resizeBuffers(const uint32_t w, const uint32_t h) = 0;
-
-    virtual const sp<Fence>& getClientTargetAcquireFence() const = 0;
-
-protected:
-    DisplaySurface() {}
-    virtual ~DisplaySurface() {}
-};
-
-// ---------------------------------------------------------------------------
-} // namespace android
-// ---------------------------------------------------------------------------
-
-#endif // ANDROID_SF_DISPLAY_SURFACE_H
-
diff --git a/services/surfaceflinger/DisplayHardware/FramebufferSurface.h b/services/surfaceflinger/DisplayHardware/FramebufferSurface.h
index 2431dfd..18c524f 100644
--- a/services/surfaceflinger/DisplayHardware/FramebufferSurface.h
+++ b/services/surfaceflinger/DisplayHardware/FramebufferSurface.h
@@ -17,15 +17,15 @@
 #ifndef ANDROID_SF_FRAMEBUFFER_SURFACE_H
 #define ANDROID_SF_FRAMEBUFFER_SURFACE_H
 
-#include "DisplayIdentification.h"
-#include "DisplaySurface.h"
-#include "HWComposerBufferCache.h"
-
 #include <stdint.h>
 #include <sys/types.h>
 
+#include <compositionengine/DisplaySurface.h>
 #include <gui/ConsumerBase.h>
 
+#include "DisplayIdentification.h"
+#include "HWComposerBufferCache.h"
+
 // ---------------------------------------------------------------------------
 namespace android {
 // ---------------------------------------------------------------------------
@@ -36,8 +36,7 @@
 
 // ---------------------------------------------------------------------------
 
-class FramebufferSurface : public ConsumerBase,
-                           public DisplaySurface {
+class FramebufferSurface : public ConsumerBase, public compositionengine::DisplaySurface {
 public:
     FramebufferSurface(HWComposer& hwc, DisplayId displayId,
                        const sp<IGraphicBufferConsumer>& consumer);
diff --git a/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.cpp b/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.cpp
index 27d3dc5..1c2853a 100644
--- a/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.cpp
+++ b/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.cpp
@@ -38,12 +38,16 @@
 #define VDS_LOGV(msg, ...) ALOGV("[%s] " msg, \
         mDisplayName.c_str(), ##__VA_ARGS__)
 
-static const char* dbgCompositionTypeStr(DisplaySurface::CompositionType type) {
+static const char* dbgCompositionTypeStr(compositionengine::DisplaySurface::CompositionType type) {
     switch (type) {
-        case DisplaySurface::COMPOSITION_UNKNOWN: return "UNKNOWN";
-        case DisplaySurface::COMPOSITION_GLES:    return "GLES";
-        case DisplaySurface::COMPOSITION_HWC:     return "HWC";
-        case DisplaySurface::COMPOSITION_MIXED:   return "MIXED";
+        case compositionengine::DisplaySurface::COMPOSITION_UNKNOWN:
+            return "UNKNOWN";
+        case compositionengine::DisplaySurface::COMPOSITION_GLES:
+            return "GLES";
+        case compositionengine::DisplaySurface::COMPOSITION_HWC:
+            return "HWC";
+        case compositionengine::DisplaySurface::COMPOSITION_MIXED:
+            return "MIXED";
         default:                                  return "<INVALID>";
     }
 }
diff --git a/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.h b/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.h
index 33678df..87ae7dd 100644
--- a/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.h
+++ b/services/surfaceflinger/DisplayHardware/VirtualDisplaySurface.h
@@ -20,13 +20,13 @@
 #include <optional>
 #include <string>
 
-#include "DisplayIdentification.h"
-#include "DisplaySurface.h"
-#include "HWComposerBufferCache.h"
-
+#include <compositionengine/DisplaySurface.h>
 #include <gui/ConsumerBase.h>
 #include <gui/IGraphicBufferProducer.h>
 
+#include "DisplayIdentification.h"
+#include "HWComposerBufferCache.h"
+
 // ---------------------------------------------------------------------------
 namespace android {
 // ---------------------------------------------------------------------------
@@ -73,7 +73,7 @@
  * the HWC output buffer. When HWC composition is complete, the scratch buffer
  * is released and the output buffer is queued to the sink.
  */
-class VirtualDisplaySurface : public DisplaySurface,
+class VirtualDisplaySurface : public compositionengine::DisplaySurface,
                               public BnGraphicBufferProducer,
                               private ConsumerBase {
 public: