cc: one copy is default as well as final fallback.

content/test/fake_compositor_dependencies.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/test/fake_compositor_dependencies.h"
 
 #include "base/single_thread_task_runner.h"
 #include "base/thread_task_runner_handle.h"
 #include "cc/test/fake_external_begin_frame_source.h"
 #include "third_party/khronos/GLES2/gl2.h"
@@ skipping 23 matching lines @@
 }
 
 bool FakeCompositorDependencies::IsDistanceFieldTextEnabled() {
   return false;
 }
 
 bool FakeCompositorDependencies::IsZeroCopyEnabled() {
   return true;
 }
 
-bool FakeCompositorDependencies::IsOneCopyEnabled() {
-  return false;
-}
-
 bool FakeCompositorDependencies::IsElasticOverscrollEnabled() {
   return false;
 }
 
 uint32 FakeCompositorDependencies::GetImageTextureTarget() {
   return GL_TEXTURE_2D;
 }
 
 scoped_refptr<base::SingleThreadTaskRunner>
 FakeCompositorDependencies::GetCompositorMainThreadTaskRunner() {
@@ skipping 33 matching lines @@
 
 cc::TaskGraphRunner* FakeCompositorDependencies::GetTaskGraphRunner() {
   return &task_graph_runner_;
 }
 
 bool FakeCompositorDependencies::IsGatherPixelRefsEnabled() {
   return false;
 }
 
 }  // namespace content