Fixing resize for HW accelerated compositing.

content/browser/browser_plugin/browser_plugin_guest.cc

 // Copyright (c) 2012 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 "content/browser/browser_plugin/browser_plugin_guest.h"
 
 #include <algorithm>
 
 #include "base/string_util.h"
 #include "content/browser/browser_plugin/browser_plugin_embedder.h"
@@ skipping 584 matching lines @@
 }
 
 void BrowserPluginGuest::OnUpdateRect(
     const ViewHostMsg_UpdateRect_Params& params) {
 
   BrowserPluginMsg_UpdateRect_Params relay_params;
   relay_params.view_size = params.view_size;
   relay_params.scale_factor = params.scale_factor;
   relay_params.is_resize_ack = ViewHostMsg_UpdateRect_Flags::is_resize_ack(
       params.flags);
+  relay_params.needs_ack = params.needs_ack;
 
   // HW accelerated case, acknowledge resize only
   if (!params.needs_ack) {
     relay_params.damage_buffer_sequence_id = 0;
     SendMessageToEmbedder(new BrowserPluginMsg_UpdateRect(
         embedder_routing_id(),
         instance_id(),
         relay_params));
      return;
   }
 
   RenderViewHost* render_view_host = web_contents()->GetRenderViewHost();
   // Only copy damage if the guest is in autosize mode and the guest's view size
   // is less than the maximum size or the guest's view size is equal to the
   // damage buffer's size and the guest's scale factor is equal to the damage
   // buffer's scale factor.
   // The scaling change can happen due to asynchronous updates of the DPI on a
   // resolution change.
   if (((auto_size_enabled_ && InAutoSizeBounds(params.view_size)) ||

[Cris Neckar, 2013/01/08 23:22:35]

ditto

       (params.view_size.width() == damage_view_size().width() &&
        params.view_size.height() == damage_view_size().height())) &&
        params.scale_factor == damage_buffer_scale_factor()) {
     TransportDIB* dib = render_view_host->GetProcess()->
         GetTransportDIB(params.bitmap);
     if (dib) {
       size_t guest_damage_buffer_size =
 #if defined(OS_WIN)
           params.bitmap_rect.width() *
           params.bitmap_rect.height() * 4;
@@ skipping 13 matching lines @@
   relay_params.scroll_delta = params.scroll_delta;
   relay_params.scroll_rect = params.scroll_rect;
   relay_params.copy_rects = params.copy_rects;
 
   SendMessageToEmbedder(new BrowserPluginMsg_UpdateRect(embedder_routing_id(),
                                                         instance_id(),
                                                         relay_params));
 }
 
 }  // namespace content