Improve scrolling performance when there are many windowed plugins in a page....

chrome/plugin/webplugin_delegate_stub.cc

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/plugin/webplugin_delegate_stub.h"
 
 #include "base/command_line.h"
 #include "base/time.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/gfx/emf.h"
@@ skipping 221 matching lines @@
   CreateSharedBuffer(size, &shared_buf, &params->shared_memory);
 
   // Retrieve a copy of the data.
   bool success = emf.GetData(shared_buf.memory(), size);
   DCHECK(success);
 }
 
 void WebPluginDelegateStub::OnUpdateGeometry(
     const gfx::Rect& window_rect,
     const gfx::Rect& clip_rect,
-    const std::vector<gfx::Rect>& cutout_rects,
-    bool visible,
     const base::SharedMemoryHandle& windowless_buffer,
     const base::SharedMemoryHandle& background_buffer) {
   webplugin_->UpdateGeometry(
-      window_rect, clip_rect, cutout_rects, visible, windowless_buffer, 
-      background_buffer);
+      window_rect, clip_rect, windowless_buffer, background_buffer);
 }
 
 void WebPluginDelegateStub::OnGetPluginScriptableObject(int* route_id,
                                                         void** npobject_ptr) {
   NPObject* object = delegate_->GetPluginScriptableObject();
   if (!object) {
     *route_id = MSG_ROUTING_NONE;
     return;
   }
 
@@ skipping 77 matching lines @@
                                       params.stream);
   webplugin_->OnResourceCreated(params.resource_id, resource_client);
 }
 
 void WebPluginDelegateStub::OnURLRequestRouted(const std::string& url,
                                                bool notify_needed,
                                                HANDLE notify_data) {
   delegate_->URLRequestRouted(url, notify_needed, notify_data);
 }