Clarify resolution change behaviors of video capture devices

content/browser/media/capture/desktop_capture_device_unittest.cc

 // Copyright (c) 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/media/capture/desktop_capture_device.h"
 
 #include "base/basictypes.h"
 #include "base/synchronization/waitable_event.h"
 #include "base/test/test_timeouts.h"
 #include "base/time/time.h"
@@ skipping 154 matching lines @@
   EXPECT_CALL(*client, OnError(_)).Times(0);
   EXPECT_CALL(*client, OnIncomingCapturedData(_, _, _, _, _)).WillRepeatedly(
       DoAll(SaveArg<1>(&frame_size),
             SaveArg<2>(&format),
             InvokeWithoutArgs(&done_event, &base::WaitableEvent::Signal)));
 
   media::VideoCaptureParams capture_params;
   capture_params.requested_format.frame_size.SetSize(640, 480);
   capture_params.requested_format.frame_rate = kFrameRate;
   capture_params.requested_format.pixel_format = media::PIXEL_FORMAT_I420;
-  capture_params.allow_resolution_change = false;
   capture_device_->AllocateAndStart(
       capture_params, client.PassAs<media::VideoCaptureDevice::Client>());
   EXPECT_TRUE(done_event.TimedWait(TestTimeouts::action_max_timeout()));
   capture_device_->StopAndDeAllocate();
 
   EXPECT_GT(format.frame_size.width(), 0);
   EXPECT_GT(format.frame_size.height(), 0);
   EXPECT_EQ(kFrameRate, format.frame_rate);
   EXPECT_EQ(media::PIXEL_FORMAT_ARGB, format.pixel_format);
 
@@ skipping 16 matching lines @@
   EXPECT_CALL(*client, OnIncomingCapturedData(_, _, _, _, _)).WillRepeatedly(
       DoAll(SaveArg<1>(&frame_size),
             SaveArg<2>(&format),
             InvokeWithoutArgs(&done_event, &base::WaitableEvent::Signal)));
 
   media::VideoCaptureParams capture_params;
   capture_params.requested_format.frame_size.SetSize(kTestFrameWidth1,
                                                      kTestFrameHeight1);
   capture_params.requested_format.frame_rate = kFrameRate;
   capture_params.requested_format.pixel_format = media::PIXEL_FORMAT_I420;
-  capture_params.allow_resolution_change = false;
 
   capture_device_->AllocateAndStart(
       capture_params, client.PassAs<media::VideoCaptureDevice::Client>());
 
   // Capture at least two frames, to ensure that the source frame size has
   // changed while capturing.
   EXPECT_TRUE(done_event.TimedWait(TestTimeouts::action_max_timeout()));
   done_event.Reset();
   EXPECT_TRUE(done_event.TimedWait(TestTimeouts::action_max_timeout()));
 
@@ skipping 21 matching lines @@
   EXPECT_CALL(*client, OnError(_)).Times(0);
   EXPECT_CALL(*client, OnIncomingCapturedData(_, _, _, _, _)).WillRepeatedly(
       DoAll(SaveArg<2>(&format),
             InvokeWithoutArgs(&done_event, &base::WaitableEvent::Signal)));
 
   media::VideoCaptureParams capture_params;
   capture_params.requested_format.frame_size.SetSize(kTestFrameWidth2,
                                                      kTestFrameHeight2);
   capture_params.requested_format.frame_rate = kFrameRate;
   capture_params.requested_format.pixel_format = media::PIXEL_FORMAT_I420;
-  capture_params.allow_resolution_change = false;
 
   capture_device_->AllocateAndStart(
       capture_params, client.PassAs<media::VideoCaptureDevice::Client>());
 
   // Capture at least three frames, to ensure that the source frame size has
   // changed at least twice while capturing.
   EXPECT_TRUE(done_event.TimedWait(TestTimeouts::action_max_timeout()));
   done_event.Reset();
   EXPECT_TRUE(done_event.TimedWait(TestTimeouts::action_max_timeout()));
   done_event.Reset();
   EXPECT_TRUE(done_event.TimedWait(TestTimeouts::action_max_timeout()));
 
   capture_device_->StopAndDeAllocate();
 
   EXPECT_EQ(kTestFrameWidth1, format.frame_size.width());
   EXPECT_EQ(kTestFrameHeight1, format.frame_size.height());
   EXPECT_EQ(kFrameRate, format.frame_rate);
   EXPECT_EQ(media::PIXEL_FORMAT_ARGB, format.pixel_format);
 }
 
 }  // namespace content