getUserMeida: report device starting states

content/browser/media/capture/screen_capture_device_android_unittest.cc

Index: content/browser/media/capture/screen_capture_device_android_unittest.cc
diff --git a/content/browser/media/capture/screen_capture_device_android_unittest.cc b/content/browser/media/capture/screen_capture_device_android_unittest.cc
index dffe27a5e875f0b890819c9e692292d7fbf54dcf..cd7db9d202185d5c593bad8ad330d8545a6cd2b5 100644
--- a/content/browser/media/capture/screen_capture_device_android_unittest.cc
+++ b/content/browser/media/capture/screen_capture_device_android_unittest.cc
@@ -9,6 +9,7 @@
 #include "testing/gtest/include/gtest/gtest.h"
 
 using ::testing::_;
+using ::testing::AtMost;
 
 namespace content {
 namespace {
@@ -33,6 +34,7 @@ class MockDeviceClient : public media::VideoCaptureDevice::Client {
                void(const tracked_objects::Location& from_here,
                     const std::string& reason));
   MOCK_CONST_METHOD0(GetBufferPoolUtilization, double(void));
+  MOCK_METHOD0(OnStarted, void(void));
 
   // Trampoline methods to workaround GMOCK problems with std::unique_ptr<>.
   Buffer ReserveOutputBuffer(const gfx::Size& dimensions,
@@ -92,6 +94,9 @@ TEST_F(ScreenCaptureDeviceAndroidTest, DISABLED_StartAndStop) {
 
   std::unique_ptr<MockDeviceClient> client(new MockDeviceClient());
   EXPECT_CALL(*client, OnError(_, _)).Times(0);
+  // |STARTED| is reported asynchronously now, which may not be got if capture

[chfremer, 2017/02/16 01:00:50]

Please remove the word "now".

[braveyao, 2017/02/17 20:37:21]

Done.

+  // is stopped immediately.
+  EXPECT_CALL(*client, OnStarted()).Times(AtMost(1));
 
   media::VideoCaptureParams capture_params;
   capture_params.requested_format.frame_size.SetSize(640, 480);