[Mojo Video Capture] Add test coverage for accelerated jpeg decoding

media/base/media_switches.cc

 // Copyright (c) 2012 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 "build/build_config.h"
 #include "media/base/media_switches.h"
 #include "ppapi/features/features.h"
 
 namespace switches {
 
@@ skipping 79 matching lines @@
 const char kUseFileForFakeVideoCapture[] = "use-file-for-fake-video-capture";
 
 // Play a .wav file as the microphone. Note that for WebRTC calls we'll treat
 // the bits as if they came from the microphone, which means you should disable
 // audio processing (lest your audio file will play back distorted). The input
 // file is converted to suit Chrome's audio buses if necessary, so most sane
 // .wav files should work. You can pass either <path> to play the file looping
 // or <path>%noloop to stop after playing the file to completion.
 const char kUseFileForFakeAudioCapture[] = "use-file-for-fake-audio-capture";
 
+// Use fake device for accelerated decoding of jpeg. This allows, for example,

[mcasas, 2017/03/08 01:33:17]

s/jpeg/JPEG/

[chfremer, 2017/03/08 18:58:08]

Done.

+// testing of the communication to the GPU service without requiring actual
+// accelerator hardware to be present.
+const char kUseFakeJpegDecodeAccelerator[] = "use-fake-jpeg-decode-accelerator";
+
 // Enables support for inband text tracks in media content.
 const char kEnableInbandTextTracks[] = "enable-inband-text-tracks";
 
 // When running tests on a system without the required hardware or libraries,
 // this flag will cause the tests to fail. Otherwise, they silently succeed.
 const char kRequireAudioHardwareForTesting[] =
     "require-audio-hardware-for-testing";
 
 // Allows clients to override the threshold for when the media renderer will
 // declare the underflow state for the video stream when audio is present.
@@ skipping 91 matching lines @@
 
 // An experimental feature to enable persistent-license type support in MediaDrm
 // when using Encrypted Media Extensions (EME) API.
 // TODO(xhwang): Remove this after feature launch. See http://crbug.com/493521
 const base::Feature kMediaDrmPersistentLicense{
     "MediaDrmPersistentLicense", base::FEATURE_DISABLED_BY_DEFAULT};
 
 #endif
 
 }  // namespace media