Autoplay: use an autoplay policy setting in Blink.

third_party/WebKit/Source/web/AssertMatchingEnums.cpp

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 32 matching lines @@
 #include "core/fileapi/FileError.h"
 #include "core/frame/Frame.h"
 #include "core/frame/FrameTypes.h"
 #include "core/frame/LocalFrameClient.h"
 #include "core/frame/Settings.h"
 #include "core/frame/csp/CSPSource.h"
 #include "core/frame/csp/ContentSecurityPolicy.h"
 #include "core/html/HTMLInputElement.h"
 #include "core/html/HTMLMediaElement.h"
 #include "core/html/forms/TextControlInnerElements.h"
+#include "core/html/media/AutoplayPolicy.h"
 #include "core/layout/compositing/CompositedSelectionBound.h"
 #include "core/loader/FrameLoaderTypes.h"
 #include "core/loader/NavigationPolicy.h"
 #include "core/loader/appcache/ApplicationCacheHost.h"
 #include "core/page/PageVisibilityState.h"
 #include "core/style/ComputedStyleConstants.h"
 #include "modules/accessibility/AXObject.h"
 #include "modules/indexeddb/IDBKey.h"
 #include "modules/indexeddb/IDBKeyPath.h"
 #include "modules/indexeddb/IDBMetadata.h"
@@ skipping 817 matching lines @@
 STATIC_ASSERT_ENUM(WebSettings::ProgressBarCompletion::kLoadEvent,
                    ProgressBarCompletion::kLoadEvent);
 STATIC_ASSERT_ENUM(WebSettings::ProgressBarCompletion::kResourcesBeforeDCL,
                    ProgressBarCompletion::kResourcesBeforeDCL);
 STATIC_ASSERT_ENUM(WebSettings::ProgressBarCompletion::kDOMContentLoaded,
                    ProgressBarCompletion::kDOMContentLoaded);
 STATIC_ASSERT_ENUM(
     WebSettings::ProgressBarCompletion::kResourcesBeforeDCLAndSameOriginIFrames,
     ProgressBarCompletion::kResourcesBeforeDCLAndSameOriginIFrames);
 
+STATIC_ASSERT_ENUM(WebSettings::AutoplayPolicy::kNoUserGestureRequired,
+                   AutoplayPolicy::Type::kNoUserGestureRequired);
+STATIC_ASSERT_ENUM(WebSettings::AutoplayPolicy::kUserGestureRequired,
+                   AutoplayPolicy::Type::kUserGestureRequired);
+STATIC_ASSERT_ENUM(
+    WebSettings::AutoplayPolicy::kUserGestureRequiredForCrossOrigin,
+    AutoplayPolicy::Type::kUserGestureRequiredForCrossOrigin);
+
 // This ensures that the version number published in
 // WebSerializedScriptValueVersion.h matches the serializer's understanding.
 // TODO(jbroman): Fix this to also account for the V8-side version. See
 // https://crbug.com/704293.
 static_assert(kSerializedScriptValueVersion ==
                   SerializedScriptValue::kWireFormatVersion,
               "Update WebSerializedScriptValueVersion.h.");
 
 }  // namespace blink