gpu: Refactor GpuMemoryBuffer framework for multi-process support.

android_webview/lib/main/aw_main_delegate.h

Index: android_webview/lib/main/aw_main_delegate.h
diff --git a/android_webview/lib/main/aw_main_delegate.h b/android_webview/lib/main/aw_main_delegate.h
index 81ebccf9e0f17c77afe144b2f943cdb15cf297ee..fbf3a73eb155947531bb88348f8dd4107eedd5bc 100644
--- a/android_webview/lib/main/aw_main_delegate.h
+++ b/android_webview/lib/main/aw_main_delegate.h
@@ -18,6 +18,7 @@ namespace android_webview {
 
 class AwContentBrowserClient;
 class AwContentRendererClient;
+class GpuMemoryBufferFactoryImpl;
 
 // Android WebView implementation of ContentMainDelegate.
 class AwMainDelegate : public content::ContentMainDelegate,
@@ -51,6 +52,7 @@ class AwMainDelegate : public content::ContentMainDelegate,
   AwContentClient content_client_;
   scoped_ptr<AwContentBrowserClient> content_browser_client_;
   scoped_ptr<AwContentRendererClient> content_renderer_client_;
+  scoped_ptr<GpuMemoryBufferFactoryImpl> gpu_memory_buffer_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(AwMainDelegate);
 };