Fix screen capture slowness in Chrome OS feedback report.

content/browser/renderer_host/media/desktop_capture_device_ash.cc

 // Copyright 2013 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/media/desktop_capture_device_ash.h"
 
 #include "base/logging.h"
 #include "base/timer/timer.h"
 #include "cc/output/copy_output_request.h"
 #include "cc/output/copy_output_result.h"
@@ skipping 99 matching lines @@
     return false;
 
   // If the desktop layer is already destroyed then return failure.
   desktop_layer_ = desktop_window_->layer();
   if (!desktop_layer_)
     return false;
 
   DCHECK(oracle_proxy.get());
   oracle_proxy_ = oracle_proxy;
 
+  // Update capture resolution.
+  oracle_proxy_->UpdateCaptureSize(ui::ConvertSizeToPixel(
+      desktop_layer_, desktop_layer_->bounds().size()));
+
   // Start observing window events.
   desktop_window_->AddObserver(this);
 
   // Start observing compositor updates.
   ui::Compositor* compositor = desktop_layer_->GetCompositor();
   if (!compositor)
     return false;
 
   compositor->AddObserver(this);
 
@@ skipping 160 matching lines @@
     scoped_ptr<Client> client) {
   DVLOG(1) << "Allocating " << params.requested_format.frame_size.ToString();
   impl_->AllocateAndStart(params, client.Pass());
 }
 
 void DesktopCaptureDeviceAsh::StopAndDeAllocate() {
   impl_->StopAndDeAllocate();
 }
 
 }  // namespace content