Clarify resolution change behaviors of video capture devices

content/renderer/media/media_stream_video_capture_source_unittest.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 "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "base/strings/utf_string_conversions.h"
 #include "content/child/child_process.h"
@@ skipping 78 matching lines @@
   scoped_refptr<VideoCapturerDelegate> delegate_;
   bool source_stopped_;
 };
 
 TEST_F(MediaStreamVideoCapturerSourceTest, TabCaptureAllowResolutionChange) {
   StreamDeviceInfo device_info;
   device_info.device.type = MEDIA_TAB_VIDEO_CAPTURE;
   InitWithDeviceInfo(device_info);
 
   EXPECT_CALL(mock_delegate(), StartCapture(
-      testing::Field(&media::VideoCaptureParams::allow_resolution_change, true),
+      testing::Field(&media::VideoCaptureParams::resolution_change_policy,
+                     media::RESOLUTION_POLICY_DYNAMIC_WITHIN_LIMIT),
       testing::_,
       testing::_)).Times(1);
   blink::WebMediaStreamTrack track = StartSource();
   // When the track goes out of scope, the source will be stopped.
   EXPECT_CALL(mock_delegate(), StopCapture());
 }
 
 TEST_F(MediaStreamVideoCapturerSourceTest,
        DesktopCaptureAllowResolutionChange) {
   StreamDeviceInfo device_info;
   device_info.device.type = MEDIA_DESKTOP_VIDEO_CAPTURE;
   InitWithDeviceInfo(device_info);
 
   EXPECT_CALL(mock_delegate(), StartCapture(
-      testing::Field(&media::VideoCaptureParams::allow_resolution_change, true),
+      testing::Field(&media::VideoCaptureParams::resolution_change_policy,
+                     media::RESOLUTION_POLICY_DYNAMIC_WITHIN_LIMIT),
       testing::_,
       testing::_)).Times(1);
   blink::WebMediaStreamTrack track = StartSource();
   // When the track goes out of scope, the source will be stopped.
   EXPECT_CALL(mock_delegate(), StopCapture());
 }
 
 TEST_F(MediaStreamVideoCapturerSourceTest, Ended) {
   StreamDeviceInfo device_info;
   device_info.device.type = MEDIA_DESKTOP_VIDEO_CAPTURE;
@@ skipping 80 matching lines @@
       base::Bind(deliver_frame_cb,
                  media::VideoFrame::CreateBlackFrame(gfx::Size(2, 2)),
                  media::VideoCaptureFormat(),
                  reference_capture_time));
   run_loop.Run();
   FakeMediaStreamVideoSink::RemoveFromVideoTrack(&fake_sink, track);
   EXPECT_EQ(reference_capture_time, capture_time);
 }
 
 }  // namespace content