refactoring mouse lock to support pepper and WebKit

webkit/plugins/ppapi/ppapi_plugin_instance.h

Index: webkit/plugins/ppapi/ppapi_plugin_instance.h
diff --git a/webkit/plugins/ppapi/ppapi_plugin_instance.h b/webkit/plugins/ppapi/ppapi_plugin_instance.h
index 086125f7aa756b2ddb2ed390daacbd397a088a27..c8a63327818239afa0e29a032bfd0664bae7352a 100644
--- a/webkit/plugins/ppapi/ppapi_plugin_instance.h
+++ b/webkit/plugins/ppapi/ppapi_plugin_instance.h
@@ -52,6 +52,7 @@ class TransportDIB;
 
 namespace WebKit {
 class WebInputEvent;
+class WebMouseEvent;
 class WebPluginContainer;
 struct WebCompositionUnderline;
 struct WebCursorInfo;
@@ -305,8 +306,12 @@ class WEBKIT_PLUGINS_EXPORT PluginInstance :
   // or embedded in a page).
   bool IsFullPagePlugin() const;
 
-  void OnLockMouseACK(int32_t result);
+  // A mouse lock request was pending and this reports success or failure.
+  void OnLockMouseACK(bool succeeded);
+  // A mouse lock was in place, but has been lost.
   void OnMouseLockLost();
+  // A mouse lock is enabled and mouse events are being delievered.
+  void HandleMouseLockedInputEvent(const WebKit::WebMouseEvent& event);
 
   // Simulates an input event to the plugin by passing it down to WebKit,
   // which sends it back up to the plugin as if it came from the user.