Move surface resize platform code from GpuProcessHostUIShim to RenderWidgetHostView implementations.

content/browser/renderer_host/render_widget_host_view_win.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_widget_host_view_win.h"
 
 #include <InputScope.h>
 #include <wtsapi32.h>
 #pragma comment(lib, "wtsapi32.lib")
 
@@ skipping 2536 matching lines @@
       0, 0, width, height, m_hWnd, 0, instance, 0);
   gfx::CheckWindowCreated(compositor_host_window_);
 
   gfx::SetWindowUserData(compositor_host_window_, this);
 
   gfx::GLSurfaceHandle surface_handle(compositor_host_window_,
                                       gfx::NATIVE_TRANSPORT);
   return surface_handle;
 }
 
+void RenderWidgetHostViewWin::ResizeCompositingSurface(const gfx::Size& size) {
+  gfx::GLSurfaceHandle surface = GetCompositingSurface();
+
+  // Ensure window does not have zero area because D3D cannot create a zero
+  // area swap chain.
+  SetWindowPos(surface.handle,

[piman, 2013/10/03 00:17:29]

surface.handle is compositor_host_window_

+      NULL,
+      0, 0,
+      std::max(1, size.width()),
+      std::max(1, size.height()),
+      SWP_NOSENDCHANGING | SWP_NOCOPYBITS | SWP_NOZORDER |
+          SWP_NOACTIVATE | SWP_DEFERERASE | SWP_NOMOVE);
+}
+
 void RenderWidgetHostViewWin::OnAcceleratedCompositingStateChange() {
   bool show = render_widget_host_->is_accelerated_compositing_active();
   // When we first create the compositor, we will get a show request from
   // the renderer before we have gotten the create request from the GPU. In this
   // case, simply ignore the show request.
   if (compositor_host_window_ == NULL)
     return;
 
   if (show) {
     ::ShowWindow(compositor_host_window_, SW_SHOW);
@@ skipping 614 matching lines @@
   return new RenderWidgetHostViewWin(widget);
 }
 
 // static
 void RenderWidgetHostViewPort::GetDefaultScreenInfo(
       WebKit::WebScreenInfo* results) {
   GetScreenInfoForWindow(0, results);
 }
 
 }  // namespace content