cc: Route offscreen context creation for compositor to the browser.

cc/resource_provider.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/resource_provider.h"
 
 #include <limits.h>
 
 #include "base/debug/alias.h"
 #include "base/hash_tables.h"
 #include "base/stl_util.h"
 #include "base/string_split.h"
 #include "base/string_util.h"
 #include "cc/gl_renderer.h" // For the GLC() macro.
 #include "cc/platform_color.h"
 #include "cc/texture_uploader.h"
 #include "cc/transferable_resource.h"
 #include "gpu/GLES2/gl2extchromium.h"
 #include "third_party/WebKit/Source/Platform/chromium/public/WebGraphicsContext3D.h"
 #include "third_party/khronos/GLES2/gl2.h"
 #include "third_party/khronos/GLES2/gl2ext.h"
 #include "ui/gfx/rect.h"
 #include "ui/gfx/vector2d.h"
+#include "ui/gl/context_provider.h"
 
 using WebKit::WebGraphicsContext3D;
 
 namespace cc {
 
 static GLenum textureToStorageFormat(GLenum textureFormat)
 {
     GLenum storageFormat = GL_RGBA8_OES;
     switch (textureFormat) {
     case GL_RGBA:
@@ skipping 1083 matching lines @@
 }
 
 void ResourceProvider::enableReadLockFences(ResourceProvider::ResourceId id, bool enable) {
     DCHECK(m_threadChecker.CalledOnValidThread());
     ResourceMap::iterator it = m_resources.find(id);
     CHECK(it != m_resources.end());
     Resource* resource = &it->second;
     resource->enableReadLockFences = enable;
 }
 
+void ResourceProvider::setOffscreenContextProvider(scoped_refptr<ui::ContextProvider> offscreenContextProvider) {
+  if (offscreenContextProvider)
+      offscreenContextProvider->BindToCurrentThread();
+  m_offscreenContextProvider = offscreenContextProvider;
+}
+
 }  // namespace cc