linux_aura: Port GtkKeybindingsHandler to Aura.

content/browser/renderer_host/render_widget_host_view_aura.h

Index: content/browser/renderer_host/render_widget_host_view_aura.h
diff --git a/content/browser/renderer_host/render_widget_host_view_aura.h b/content/browser/renderer_host/render_widget_host_view_aura.h
index bc2ad37a2f858a18c073c158fe2d2c3e3c8ef49d..448e0d0d2a856d8ce3059fbc7c97a7f4e734c33e 100644
--- a/content/browser/renderer_host/render_widget_host_view_aura.h
+++ b/content/browser/renderer_host/render_widget_host_view_aura.h
@@ -77,6 +77,10 @@ namespace content {
 class LegacyRenderWidgetHostHWND;
 #endif
 
+#if defined(OS_LINUX) && !defined(OS_CHROMEOS)
+class KeybindingHandlerAuraX11;
+#endif
+
 class RenderWidgetHostImpl;
 class RenderWidgetHostView;
 class ResizeLock;
@@ -422,6 +426,8 @@ class CONTENT_EXPORT RenderWidgetHostViewAura
   virtual gfx::Point GetLastTouchEventLocation() const OVERRIDE;
   virtual void FatalAccessibilityTreeError() OVERRIDE;
 
+  void DoSharedInit();
+
   void UpdateCursorIfOverSelf();
   bool ShouldSkipFrame(gfx::Size size_in_dip) const;
 
@@ -518,6 +524,11 @@ class CONTENT_EXPORT RenderWidgetHostViewAura
   // Detaches |this| from the input method object.
   void DetachFromInputMethod();
 
+  // Before calling RenderWidgetHost::ForwardKeyboardEvent(), this method
+  // calls our keybindings handler against the event and send matched
+  // edit commands to renderer instead.
+  void ForwardKeyboardEvent(const NativeWebKeyboardEvent& event);
+
   // Dismisses a Web Popup on a mouse or touch press outside the popup and its
   // parent.
   void ApplyEventFilterForPopupExit(ui::LocatedEvent* event);
@@ -755,6 +766,10 @@ class CONTENT_EXPORT RenderWidgetHostViewAura
   // over this view changes, we need this information in order to create a new
   // region for the HWND.
   PluginWindowMoves plugin_window_moves_;
+#elif defined(OS_LINUX) && !defined(OS_CHROMEOS)
+  // A convenience object for handling editor key bindings defined in gtk
+  // keyboard theme.
+  scoped_ptr<KeybindingHandlerAuraX11> key_bindings_handler_;
 #endif
 
   base::TimeTicks last_draw_ended_;