Don't mark a WebMediaPlayer as idle until it has size and first frame.

content/renderer/media/renderer_webmediaplayer_delegate_browsertest.cc

 // Copyright 2016 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/bind_helpers.h"
 #include "base/run_loop.h"
 #include "base/test/simple_test_tick_clock.h"
 #include "base/tuple.h"
 #include "content/common/media/media_player_delegate_messages.h"
@@ skipping 142 matching lines @@
 TEST_F(RendererWebMediaPlayerDelegateTest, IdleDelegatesAreSuspended) {
   // Start the tick clock off at a non-null value.
   base::SimpleTestTickClock tick_clock;
   tick_clock.Advance(base::TimeDelta::FromSeconds(1234));
 
   const base::TimeDelta kIdleTimeout = base::TimeDelta::FromSeconds(2);
   delegate_manager_->EnableInstantIdleCleanupForTesting(kIdleTimeout,
                                                         &tick_clock);
   EXPECT_FALSE(delegate_manager_->IsIdleCleanupTimerRunningForTesting());
 
+  // Just adding an observer should not start the idle timer.
   testing::StrictMock<MockWebMediaPlayerDelegateObserver> observer_1;
   const int delegate_id_1 = delegate_manager_->AddObserver(&observer_1);
-  EXPECT_TRUE(delegate_manager_->IsIdleCleanupTimerRunningForTesting());
+  EXPECT_FALSE(delegate_manager_->IsIdleCleanupTimerRunningForTesting());
+
+  // Starting playback should not have an idle timer.
   delegate_manager_->DidPlay(delegate_id_1, true, true, false,
                              base::TimeDelta());
   EXPECT_FALSE(delegate_manager_->IsIdleCleanupTimerRunningForTesting());
 
-  // Never playing should count as idle.
+  // Never calling DidPlay() but calling DidPause() should count as idle.
   testing::StrictMock<MockWebMediaPlayerDelegateObserver> observer_2;
   const int delegate_id_2 = delegate_manager_->AddObserver(&observer_2);
+  delegate_manager_->DidPause(delegate_id_2, false);
   EXPECT_TRUE(delegate_manager_->IsIdleCleanupTimerRunningForTesting());
 
   // Adding the observer should instantly queue the timeout task, once run the
   // second delegate should be expired while the first is kept alive.
   {
     EXPECT_CALL(observer_2, OnHidden(true))
         .WillOnce(RunClosure(base::Bind(
             &RendererWebMediaPlayerDelegate::PlayerGone,
             base::Unretained(delegate_manager_.get()), delegate_id_2)));
     base::RunLoop run_loop;
@@ skipping 37 matching lines @@
     run_loop.Run();
   }
 
   delegate_manager_->RemoveObserver(delegate_id_1);
   delegate_manager_->RemoveObserver(delegate_id_2);
   delegate_manager_->RemoveObserver(delegate_id_3);
   EXPECT_FALSE(delegate_manager_->IsIdleCleanupTimerRunningForTesting());
 }
 
 }  // namespace media