Update webrtc::DesktopCapturer clients to implement OnCaptureResult().

remoting/host/chromeos/aura_desktop_capturer.cc

 // Copyright 2014 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 "remoting/host/chromeos/aura_desktop_capturer.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "cc/output/copy_output_request.h"
@@ skipping 37 matching lines @@
 
   gfx::Rect window_rect(desktop_window_->bounds().size());
 
   request->set_area(window_rect);
   desktop_window_->layer()->RequestCopyOfOutput(std::move(request));
 }
 
 void AuraDesktopCapturer::OnFrameCaptured(
     std::unique_ptr<cc::CopyOutputResult> result) {
   if (result->IsEmpty()) {
-    callback_->OnCaptureCompleted(nullptr);
+    callback_->OnCaptureResult(DesktopCatpurer::Result::ERROR_TEMPORARY,
+                               nullptr);
     return;
   }
 
   DCHECK(result->HasBitmap());
 
   std::unique_ptr<SkBitmap> bitmap = result->TakeBitmap();
 
   std::unique_ptr<webrtc::DesktopFrame> frame(
       SkiaBitmapDesktopFrame::Create(std::move(bitmap)));
 
   // |VideoFramePump| will not encode the frame if |updated_region| is empty.
   const webrtc::DesktopRect& rect = webrtc::DesktopRect::MakeWH(
       frame->size().width(), frame->size().height());
 
   // TODO(kelvinp): Set Frame DPI according to the screen resolution.
   // See cc::Layer::contents_scale_(x|y)() and frame->set_depi().
   frame->mutable_updated_region()->SetRect(rect);
 
-  callback_->OnCaptureCompleted(frame.release());
+  callback_->OnCaptureResult(DesktopCatpurer::Result::SUCCESS,
+                             std::move(frame));
 }
 
 }  // namespace remoting