This CL fixes issue 11480: Support GTK keyboard themes (emacs keybindings)....

chrome/browser/renderer_host/render_widget_host_view.h

Index: chrome/browser/renderer_host/render_widget_host_view.h
===================================================================
--- chrome/browser/renderer_host/render_widget_host_view.h	（版本 21941）
+++ chrome/browser/renderer_host/render_widget_host_view.h	（工作副本）
@@ -22,6 +22,7 @@
 class RenderProcessHost;
 class RenderWidgetHost;
 class WebCursor;
+class NativeWebKeyboardEvent;
 struct WebMenuItem;
 
 // RenderWidgetHostView is an interface implemented by an object that acts as
@@ -168,6 +169,15 @@
 
   virtual void PluginProcessCrashed(base::ProcessId pid) { }
 
+  // Called by RenderWidgetHost when a keyboard event was not processed by the
+  // renderer. Subclasses may override this method to handle the events, for
+  // example to match the events against system defined key bindings and
+  // translate them into edit commands.
+  // Returns true if the event is handled, otherwise returns false.
+  virtual bool UnhandledKeyboardEvent(const NativeWebKeyboardEvent& event) {
+    return false;
+  }
+
   void set_activatable(bool activatable) {
     activatable_ = activatable;
   }