Support mouse lock in Flash fullscreen mode.

webkit/plugins/ppapi/fullscreen_container.h

Index: webkit/plugins/ppapi/fullscreen_container.h
diff --git a/webkit/plugins/ppapi/fullscreen_container.h b/webkit/plugins/ppapi/fullscreen_container.h
index dafaea6f4159a81f7c0db93220d9e2ce7f3d850c..e5e5427250f00dea3058c2e0b4a26b2cdef24bd2 100644
--- a/webkit/plugins/ppapi/fullscreen_container.h
+++ b/webkit/plugins/ppapi/fullscreen_container.h
@@ -7,6 +7,8 @@
 
 #include "webkit/plugins/ppapi/plugin_delegate.h"
 
+class MouseLockDispatcher;
+
 namespace WebKit {
 struct WebCursorInfo;
 struct WebRect;
@@ -38,6 +40,9 @@ class FullscreenContainer {
   virtual void DidChangeCursor(const WebKit::WebCursorInfo& cursor) = 0;
 
   virtual PluginDelegate::PlatformContext3D* CreateContext3D() = 0;
+
+  // The returned object is owned by FullscreenContainer.
+  virtual MouseLockDispatcher* GetMouseLockDispatcher() = 0;
 };
 
 }  // namespace ppapi