Add content::RenderWidgetHost::MouseEventCallback

content/public/browser/render_widget_host.h

Index: content/public/browser/render_widget_host.h
diff --git a/content/public/browser/render_widget_host.h b/content/public/browser/render_widget_host.h
index ca727b78c68ad675d869c117f1b687c0468a1c4e..7121d553a849c1e3493822371db929c70dd68c00 100644
--- a/content/public/browser/render_widget_host.h
+++ b/content/public/browser/render_widget_host.h
@@ -29,6 +29,7 @@ class Rect;
 }
 
 namespace WebKit {
+class WebMouseEvent;
 struct WebScreenInfo;
 }
 
@@ -296,6 +297,11 @@ class CONTENT_EXPORT RenderWidgetHost : public IPC::Sender {
   // Remove a keyboard listener.
   virtual void RemoveKeyboardListener(KeyboardListener* listener) = 0;
 
+  // Add/remove a callback that can handle all kinds of mouse events.
+  typedef base::Callback<bool(const WebKit::WebMouseEvent&)> MouseEventCallback;
+  virtual void AddMouseEventCallback(const MouseEventCallback& callback) = 0;
+  virtual void RemoveMouseEventCallback(const MouseEventCallback& callback) = 0;
+
   // Get the screen info corresponding to this render widget.
   virtual void GetWebScreenInfo(WebKit::WebScreenInfo* result) = 0;