cc: Make most of cc::OutputSurface abstract.

content/browser/compositor/software_browser_compositor_output_surface.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/compositor/software_browser_compositor_output_surface.h"
 
 #include <utility>
 
 #include "base/location.h"
 #include "base/memory/ref_counted.h"
@@ skipping 15 matching lines @@
     cc::SyntheticBeginFrameSource* begin_frame_source)
     : BrowserCompositorOutputSurface(std::move(software_device),
                                      vsync_manager,
                                      begin_frame_source),
       weak_factory_(this) {}
 
 SoftwareBrowserCompositorOutputSurface::
     ~SoftwareBrowserCompositorOutputSurface() {
 }
 
+void SoftwareBrowserCompositorOutputSurface::EnsureBackbuffer() {
+  software_device()->EnsureBackbuffer();
+}
+
+void SoftwareBrowserCompositorOutputSurface::DiscardBackbuffer() {
+  software_device()->DiscardBackbuffer();
+}
+
+void SoftwareBrowserCompositorOutputSurface::BindFramebuffer() {
+  // Not used for software surfaces.
+  NOTREACHED();
+}
+
 void SoftwareBrowserCompositorOutputSurface::SwapBuffers(
     cc::CompositorFrame frame) {
   base::TimeTicks swap_time = base::TimeTicks::Now();
   for (auto& latency : frame.metadata.latency_info) {
     latency.AddLatencyNumberWithTimestamp(
         ui::INPUT_EVENT_GPU_SWAP_BUFFER_COMPONENT, 0, 0, swap_time, 1);
     latency.AddLatencyNumberWithTimestamp(
         ui::INPUT_EVENT_LATENCY_TERMINATED_FRAME_SWAP_COMPONENT, 0, 0,
         swap_time, 1);
   }
   base::ThreadTaskRunnerHandle::Get()->PostTask(
       FROM_HERE, base::Bind(&RenderWidgetHostImpl::CompositorFrameDrawn,
                             frame.metadata.latency_info));
 
   gfx::VSyncProvider* vsync_provider = software_device()->GetVSyncProvider();
   if (vsync_provider) {
     vsync_provider->GetVSyncParameters(base::Bind(
         &BrowserCompositorOutputSurface::OnUpdateVSyncParametersFromGpu,
         weak_factory_.GetWeakPtr()));
   }
   PostSwapBuffersComplete();
 }
 
-void SoftwareBrowserCompositorOutputSurface::BindFramebuffer() {
-  // Not used for software surfaces.
-  NOTREACHED();
+bool SoftwareBrowserCompositorOutputSurface::IsDisplayedAsOverlayPlane() const {
+  return false;
+}
+
+unsigned SoftwareBrowserCompositorOutputSurface::GetOverlayTextureId() const {
+  return 0;
+}
+
+bool SoftwareBrowserCompositorOutputSurface::SurfaceIsSuspendForRecycle()
+    const {
+  return false;
 }
 
 GLenum
 SoftwareBrowserCompositorOutputSurface::GetFramebufferCopyTextureFormat() {
   // Not used for software surfaces.
   NOTREACHED();
   return 0;
 }
 
 void SoftwareBrowserCompositorOutputSurface::OnGpuSwapBuffersCompleted(
     const std::vector<ui::LatencyInfo>& latency_info,
     gfx::SwapResult result,
     const gpu::GpuProcessHostedCALayerTreeParamsMac* params_mac) {
   NOTREACHED();
 }
 
 #if defined(OS_MACOSX)
 void SoftwareBrowserCompositorOutputSurface::SetSurfaceSuspendedForRecycle(
     bool suspended) {
 }
 #endif
 
 }  // namespace content