Code: AudioParameters GetInputParametersOnDeviceThread(AudioManager* audio_manager,
                                                 const std::string& device_id) {
   DCHECK(audio_manager->GetTaskRunner()->BelongsToCurrentThread());
 
   if (!audio_manager->HasAudioInputDevices())
     return AudioParameters();
 
   return audio_manager->GetInputStreamParameters(device_id);
 }

Vulnerability Type: DoS 
CWE ID: 
Summary: Multiple unspecified vulnerabilities in Google Chrome before 43.0.2357.65 allow attackers to cause a denial of service or possibly have other impact via unknown vectors.
Commit Message: Switching AudioOutputAuthorizationHandler from using AudioManager interface to AudioSystem one.

BUG=672468
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel

Review-Url: https://codereview.chromium.org/2692203003
Cr-Commit-Position: refs/heads/master@{#450939}