Migrate Graphics2D to new design.

content/public/renderer/renderer_ppapi_host.h

Index: content/public/renderer/renderer_ppapi_host.h
diff --git a/content/public/renderer/renderer_ppapi_host.h b/content/public/renderer/renderer_ppapi_host.h
index 8fda76982f07f6c5106275496178ab10286253f6..01b0d44382f33625f2926256fd6f797c73563ebc 100644
--- a/content/public/renderer/renderer_ppapi_host.h
+++ b/content/public/renderer/renderer_ppapi_host.h
@@ -6,6 +6,7 @@
 #define CONTENT_PUBLIC_RENDERER_RENDERER_PPAPI_HOST_H_
 
 #include "ppapi/c/pp_instance.h"
+#include "webkit/plugins/ppapi/plugin_delegate.h"
 
 namespace ppapi {
 namespace host {
@@ -34,6 +35,11 @@ class RendererPpapiHost {
   // instance is invalid.
   virtual RenderView* GetRenderViewForInstance(PP_Instance instance) const = 0;
 
+  // Returns the PlatformGraphics2D for the given plugin resource, or NULL if
+  // the resource is invalid.
+  virtual webkit::ppapi::PluginDelegate::PlatformGraphics2D*
+      GetPlatformGraphics2D(PP_Resource resource) = 0;
+
   // Returns true if the given instance is considered to be currently
   // processing a user gesture or the plugin module has the "override user
   // gesture" flag set (in which case it can always do things normally
@@ -48,4 +54,3 @@ class RendererPpapiHost {
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_RENDERER_RENDERER_PPAPI_HOST_H_
-