"Buttery Smooth" Tab Capture.

content/browser/media/capture/web_contents_video_capture_device_unittest.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/media/capture/web_contents_video_capture_device.h"
 
 #include "base/bind_helpers.h"
 #include "base/debug/debugger.h"
 #include "base/run_loop.h"
 #include "base/test/test_timeouts.h"
@@ skipping 178 matching lines @@
 
   virtual void EndFrameSubscription() OVERRIDE {
     subscriber_.reset();
   }
 
   // Simulate a compositor paint event for our subscriber.
   void SimulateUpdate() {
     const base::TimeTicks present_time = base::TimeTicks::Now();
     RenderWidgetHostViewFrameSubscriber::DeliverFrameCallback callback;
     scoped_refptr<media::VideoFrame> target;
-    if (subscriber_ && subscriber_->ShouldCaptureFrame(present_time,
-                                                       &target, &callback)) {
+    if (subscriber_ && subscriber_->ShouldCaptureFrame(
+            gfx::Rect(), present_time, &target, &callback)) {
       SkColor c = ConvertRgbToYuv(controller_->GetSolidColor());
       media::FillYUV(
           target.get(), SkColorGetR(c), SkColorGetG(c), SkColorGetB(c));
       BrowserThread::PostTask(BrowserThread::UI,
                               FROM_HERE,
                               base::Bind(callback, present_time, true));
       controller_->SignalCopy();
     }
   }
 
@@ skipping 589 matching lines @@
   source()->SetSolidColor(SK_ColorGREEN);
   ASSERT_NO_FATAL_FAILURE(client_observer()->WaitForNextColor(SK_ColorGREEN));
   source()->SetSolidColor(SK_ColorRED);
   ASSERT_NO_FATAL_FAILURE(client_observer()->WaitForNextColor(SK_ColorRED));
 
   device()->StopAndDeAllocate();
 }
 
 }  // namespace
 }  // namespace content