Move surface resize platform code from GpuProcessHostUIShim to RenderWidgetHostView implementations.

content/browser/renderer_host/render_widget_host_view_win.cc

Index: content/browser/renderer_host/render_widget_host_view_win.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_win.cc b/content/browser/renderer_host/render_widget_host_view_win.cc
index 92abb4b2c10df2501881b0b0003dac636eb1eb0f..66a3d370671f0bcb70ca66cb8544a5390c024b98 100644
--- a/content/browser/renderer_host/render_widget_host_view_win.cc
+++ b/content/browser/renderer_host/render_widget_host_view_win.cc
@@ -2554,6 +2554,20 @@ gfx::GLSurfaceHandle RenderWidgetHostViewWin::GetCompositingSurface() {
   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