Mac: Unregress right-clicks for CoreAnimation plugins.

BUG=52593,51748
TEST=Right-click a youtube video. Should get context menu.

Review URL: http://codereview.chromium.org/3117035

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@57058 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/renderer_host/render_widget_host_view_mac.mm

@@ -237,6 +237,15 @@ static CVReturn DrawOneAcceleratedPluginCallback(
   [self drawView];
 }
 
+- (void)rightMouseDown:(NSEvent*)event {
+  // The NSResponder documentation: "Note: The NSView implementation of this
+  // method does not pass the message up the responder chain, it handles it
+  // directly."
+  // That's bad, we want the next responder (RWHVMac) to handle this event to
+  // dispatch it to the renderer.
+  [[self nextResponder] rightMouseDown:event];
+}
+
 - (void)globalFrameDidChange:(NSNotification*)notification {
   CGLLockContext(cglContext_);
   [glContext_ update];