Add embedder api for participating in gpu logic

content/public/common/content_client.h

Index: content/public/common/content_client.h
diff --git a/content/public/common/content_client.h b/content/public/common/content_client.h
index 9d51d5ba83d4cf5a458f84137d963d39063c7c40..5bd865d9412287a8e38627be0d897ccd7399f792 100644
--- a/content/public/common/content_client.h
+++ b/content/public/common/content_client.h
@@ -42,6 +42,7 @@ namespace content {
 
 class ContentBrowserClient;
 class ContentClient;
+class ContentGpuClient;
 class ContentPluginClient;
 class ContentRendererClient;
 class ContentUtilityClient;
@@ -72,6 +73,7 @@ class CONTENT_EXPORT ContentClient {
   virtual ~ContentClient();
 
   ContentBrowserClient* browser() { return browser_; }
+  ContentGpuClient* gpu() { return gpu_; }
   ContentPluginClient* plugin() { return plugin_; }
   ContentRendererClient* renderer() { return renderer_; }
   ContentUtilityClient* utility() { return utility_; }
@@ -159,6 +161,8 @@ class CONTENT_EXPORT ContentClient {
 
   // The embedder API for participating in browser logic.
   ContentBrowserClient* browser_;
+  // The embedder API for participating in gpu logic.
+  ContentGpuClient* gpu_;
   // The embedder API for participating in plugin logic.
   ContentPluginClient* plugin_;
   // The embedder API for participating in renderer logic.