Remove TransportDIB methods from RenderProcess(Host)

content/browser/renderer_host/render_widget_helper.h

Index: content/browser/renderer_host/render_widget_helper.h
diff --git a/content/browser/renderer_host/render_widget_helper.h b/content/browser/renderer_host/render_widget_helper.h
index 27739ee1359beea99d25c5ddaf62c6faf1b2a782..50ecdbda4912bb05f61024cadb0e5365543cfcca 100644
--- a/content/browser/renderer_host/render_widget_helper.h
+++ b/content/browser/renderer_host/render_widget_helper.h
@@ -134,11 +134,6 @@ class RenderWidgetHelper
   // created by CreateNewWindow which initially blocked the requests.
   void ResumeRequestsForView(int route_id);
 
-#if defined(OS_POSIX) && !defined(OS_ANDROID)
-  // Given the id of a transport DIB, return a mapping to it or NULL on error.
-  TransportDIB* MapTransportDIB(TransportDIB::Id dib_id);
-#endif
-
   // IO THREAD ONLY -----------------------------------------------------------
 
   // Called on the IO thread when a BackingStore message is received.