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

content/browser/renderer_host/render_view_host_impl.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/renderer_host/render_view_host_impl.h"
 
 #include <set>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 251 matching lines @@
   params.session_storage_namespace_id = session_storage_namespace_->id();
   params.frame_name = frame_name;
   // Ensure the RenderView sets its opener correctly.
   params.opener_route_id = opener_route_id;
   params.swapped_out = is_swapped_out_;
   params.next_page_id = next_page_id;
   GetWebScreenInfo(&params.screen_info);
 
   params.accessibility_mode =
       BrowserAccessibilityStateImpl::GetInstance()->GetAccessibilityMode();
+  params.allow_partial_swap = !GetProcess()->IsGuest();
 
   Send(new ViewMsg_New(params));
 
   // If it's enabled, tell the renderer to set up the Javascript bindings for
   // sending messages back to the browser.
   if (GetProcess()->IsGuest())
     DCHECK_EQ(0, enabled_bindings_);
   Send(new ViewMsg_AllowBindings(GetRoutingID(), enabled_bindings_));
   // Let our delegate know that we created a RenderView.
   delegate_->RenderViewCreated(this);
@@ skipping 1789 matching lines @@
           GetRoutingID(), snapshot_id, snapshot_size, png));
       return;
     }
   }
 
   Send(new ViewMsg_WindowSnapshotCompleted(
       GetRoutingID(), snapshot_id, gfx::Size(), png));
 }
 
 }  // namespace content