Don't move the window when resizing

content/browser/gpu/gpu_process_host_ui_shim.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/gpu/gpu_process_host_ui_shim.h"
 
 #include <algorithm>
 
 #include "base/bind.h"
 #include "base/command_line.h"
@@ skipping 259 matching lines @@
   }
 #elif defined(OS_WIN)
   // Ensure window does not have zero area because D3D cannot create a zero
   // area swap chain.
   SetWindowPos(surface.handle,
       NULL,
       0, 0,
       std::max(1, size.width()),
       std::max(1, size.height()),
       SWP_NOSENDCHANGING | SWP_NOCOPYBITS | SWP_NOZORDER |
-          SWP_NOACTIVATE | SWP_DEFERERASE);
+          SWP_NOACTIVATE | SWP_DEFERERASE | SWP_NOMOVE);
 #endif
 }
 
 #endif
 
 void GpuProcessHostUIShim::OnAcceleratedSurfaceNew(
     const GpuHostMsg_AcceleratedSurfaceNew_Params& params) {
   RenderWidgetHostViewPort* view = GetRenderWidgetHostViewFromSurfaceID(
       params.surface_id);
   if (!view)
@@ skipping 69 matching lines @@
 }
 
 void GpuProcessHostUIShim::OnAcceleratedSurfaceRelease(
     const GpuHostMsg_AcceleratedSurfaceRelease_Params& params) {
   RenderWidgetHostViewPort* view = GetRenderWidgetHostViewFromSurfaceID(
       params.surface_id);
   if (!view)
     return;
   view->AcceleratedSurfaceRelease(params.identifier);
 }