Move context-related callbacks into OutputSurface

cc/test/fake_output_surface.cc

 // Copyright 2012 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 "cc/test/fake_output_surface.h"
 
 namespace cc {
 
 FakeOutputSurface::FakeOutputSurface(
     scoped_ptr<WebKit::WebGraphicsContext3D> context3d, bool has_parent)
     : OutputSurface(context3d.Pass()),
       num_sent_frames_(0) {
   capabilities_.has_parent_compositor = has_parent;
 }
 
 FakeOutputSurface::FakeOutputSurface(
     scoped_ptr<SoftwareOutputDevice> software_device, bool has_parent)
     : OutputSurface(software_device.Pass()),
       num_sent_frames_(0) {
   capabilities_.has_parent_compositor = has_parent;
 }
 
 FakeOutputSurface::~FakeOutputSurface() {}
 
-bool FakeOutputSurface::BindToClient(
-    cc::OutputSurfaceClient* client) {
-  DCHECK(client);
-  client_ = client;
-  if (!context3d_)
-    return true;
-  return context3d_->makeContextCurrent();
-}
-
 void FakeOutputSurface::SendFrameToParentCompositor(
     CompositorFrame* frame) {
   frame->AssignTo(&last_sent_frame_);
   ++num_sent_frames_;
 }
 
 }  // namespace cc