Convert offscreen canvas to use FrameSinkManagerHost.

content/browser/compositor/surface_utils.cc

 // Copyright 2015 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/surface_utils.h"
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/memory/ref_counted.h"
 #include "build/build_config.h"
@@ skipping 160 matching lines @@
 #if defined(OS_ANDROID)
   return CompositorImpl::GetSurfaceManager();
 #else
   ImageTransportFactory* factory = ImageTransportFactory::GetInstance();
   if (factory == NULL)
     return nullptr;
   return factory->GetContextFactoryPrivate()->GetSurfaceManager();
 #endif
 }
 
+cc::mojom::DisplayCompositor* GetDisplayCompositor() {
+#if defined(OS_ANDROID)
+  return CompositorImpl::GetDisplayCompositor();
+#else
+  ImageTransportFactory* factory = ImageTransportFactory::GetInstance();
+  if (!factory)
+    return nullptr;
+  return factory->GetContextFactoryPrivate()->GetDisplayCompositor();
+#endif
+}
+
 void CopyFromCompositingSurfaceHasResult(
     const gfx::Size& dst_size_in_pixel,
     const SkColorType color_type,
     const ReadbackRequestCallback& callback,
     std::unique_ptr<cc::CopyOutputResult> result) {
   if (result->IsEmpty() || result->size().IsEmpty()) {
     callback.Run(SkBitmap(), READBACK_FAILED);
     return;
   }
 
@@ skipping 10 matching lines @@
     return;
   }
 
   DCHECK(result->HasBitmap());
   // Software path
   PrepareBitmapCopyOutputResult(output_size_in_pixel, color_type, callback,
                                 std::move(result));
 }
 
 }  // namespace content