Allow autoplay unmuted for WebAPK in the manifest scope

content/public/common/content_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 "content/public/common/content_switches.h"
 #include "media/media_features.h"
 
 namespace switches {
 
@@ skipping 636 matching lines @@
 
 // Resizes of the main frame are caused by changing between landscape and
 // portrait mode (i.e. Android) so the page should be rescaled to fit.
 const char kMainFrameResizesAreOrientationChanges[] =
     "main-frame-resizes-are-orientation-changes";
 
 // Sets the width and height above which a composited layer will get tiled.
 const char kMaxUntiledLayerHeight[]         = "max-untiled-layer-height";
 const char kMaxUntiledLayerWidth[]          = "max-untiled-layer-width";
 
+// Disable gesture requirement for media playback in the specified whitelist.
+const char kMediaPlaybackGestureWhitelistScope[] =
+    "media-playback-gesture-whitelist-scope";
+
 // Sample memory usage with high frequency and store the results to the
 // Renderer.Memory histogram. Used in memory tests.
 const char kMemoryMetrics[]                 = "memory-metrics";
 
 // Sets options for MHTML generator to skip no-store resources:
 //   "skip-nostore-main" - fails to save a page if main frame is 'no-store'
 //   "skip-nostore-all" - also skips no-store subresources.
 const char kMHTMLGeneratorOption[]          = "mhtml-generator-option";
 const char kMHTMLSkipNostoreMain[]          = "skip-nostore-main";
 const char kMHTMLSkipNostoreAll[]           = "skip-nostore-all";
@@ skipping 432 matching lines @@
 // the given directory. Used primarily to gather samples for IPC fuzzing.
 const char kIpcDumpDirectory[] = "ipc-dump-directory";
 
 // Specifies the testcase used by the IPC fuzzer.
 const char kIpcFuzzerTestcase[] = "ipc-fuzzer-testcase";
 #endif
 
 // Don't dump stuff here, follow the same order as the header.
 
 }  // namespace switches