Disable partial swaps for webview guest renderer until we can figure out how to do that properly.

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/message_loop.h"
 #include "base/string_util.h"
@@ skipping 72 matching lines @@
   // For GTK and Aura this is necessary to get proper renderer configuration
   // values for caret blinking interval, colors related to selection and
   // focus.
   *renderer_prefs = *embedder_web_contents->GetMutableRendererPrefs();
 
   renderer_prefs->throttle_input_events = false;
   // We would like the guest to report changes to frame names so that we can
   // update the BrowserPlugin's corresponding 'name' attribute.
   // TODO(fsamuel): Remove this once http://crbug.com/169110 is addressed.
   renderer_prefs->report_frame_name_changes = true;
+  // Webview compositing does not currently work with partial swaps.

[Fady Samuel, 2013/03/06 18:59:38]

Please avoid using the term webview in BrowserPlugin if not necessary as the
BrowserPlugin infrastructure will be used by other elements shortly.

// BrowserPlugin compositing does not currently work with partial swaps.

+  renderer_prefs->allow_partial_swap = false;
   // Navigation is disabled in Chrome Apps. We want to make sure guest-initiated
   // navigations still continue to function inside the app.
   renderer_prefs->browser_handles_all_top_level_requests = false;
 }
 
 void BrowserPluginGuest::Destroy() {
   if (destroy_called_)
     return;
   destroy_called_ = true;
   embedder_web_contents_ = NULL;
@@ skipping 771 matching lines @@
   relay_params.bitmap_rect = params.bitmap_rect;
   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(instance_id(), relay_params));
 }
 
 }  // namespace content