Make autoplay policies no longer platform dependant.

chrome/browser/flag_descriptions.h

 // Copyright 2017 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.
 
 #ifndef CHROME_BROWSER_FLAG_DESCRIPTIONS_H_
 #define CHROME_BROWSER_FLAG_DESCRIPTIONS_H_
 
 // Includes needed for macros allowing conditional compilation of some strings.
 #include "build/build_config.h"
 #include "build/buildflag.h"
@@ skipping 3325 matching lines @@
 #endif  // defined(OS_ANDROID)
 
 // Name of the autoplay policy flag.
 extern const char kAutoplayPolicyName[];
 
 // Description of the autoplay policy entry.
 extern const char kAutoplayPolicyDescription[];
 
 // Description of the autoplay policy that requires a user gesture on cross
 // origin iframes.
-extern const char kAutoplayPolicyCrossOriginUserGestureRequired[];
+extern const char kAutoplayPolicyUserGestureRequiredForCrossOrigin[];
 
 // Description of the autoplay policy that has no user gesture requirements.
 extern const char kAutoplayPolicyNoUserGestureRequired[];
 
 // Description of the autoplay policy that requires a user gesture.
 extern const char kAutoplayPolicyUserGestureRequired[];
 
 // Name of the about: flag for displaying the title of the omnibox match for
 // current URL.
 extern const char kOmniboxDisplayTitleForCurrentUrlName[];
@@ skipping 47 matching lines @@
 // a hard-reload.
 extern const char kLocationHardReloadDescription[];
 
 // Name and description for the capture-thumbnail-on-load-finished flag.
 extern const char kCaptureThumbnailOnLoadFinishedName[];
 extern const char kCaptureThumbnailOnLoadFinishedDescription[];
 
 }  // namespace flag_descriptions
 
 #endif  // CHROME_BROWSER_FLAG_DESCRIPTIONS_H_