Implement all resolution change policies for desktop and tab capture.

content/browser/media/capture/web_contents_audio_input_stream_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/web_contents_audio_input_stream.h"
 
 #include <list>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 338 matching lines @@
     // Note: Arbitrarily chosen, but more iterations causes tests to take
     // significantly more time.
     static const int kNumIterations = 3;
     for (int i = 0; i < kNumIterations; ++i)
       on_data_event_.Wait();
   }
 
  private:
   void SimulateChangeCallback(int render_process_id, int render_frame_id) {
     ASSERT_FALSE(change_callback_.is_null());
-    if (render_process_id == -1 || render_frame_id == -1) {
-      change_callback_.Run(NULL);
-    } else {
-      // For our tests, any non-NULL value will suffice since it will not be
-      // dereferenced.
-      change_callback_.Run(reinterpret_cast<RenderWidgetHost*>(0xdeadbee5));
-    }
+    change_callback_.Run(render_process_id != -1 && render_frame_id != -1);
   }
 
   scoped_ptr<TestBrowserThreadBundle> thread_bundle_;
   base::Thread audio_thread_;
 
   scoped_ptr<MockAudioMirroringManager> mock_mirroring_manager_;
   scoped_refptr<MockWebContentsTracker> mock_tracker_;
 
   MockVirtualAudioInputStream* mock_vais_;  // Owned by wcais_.
   WebContentsAudioInputStream* wcais_;  // Self-destructs on Close().
@@ skipping 124 matching lines @@
   WaitForData();
   RUN_ON_AUDIO_THREAD(RemoveOneInputInFIFOOrder);
   WaitForData();
   RUN_ON_AUDIO_THREAD(ChangeMirroringTarget);
   RUN_ON_AUDIO_THREAD(RemoveOneInputInFIFOOrder);
   RUN_ON_AUDIO_THREAD(Stop);
   RUN_ON_AUDIO_THREAD(Close);
 }
 
 }  // namespace content