Add new extension APIs related to animation policy.

content/public/common/web_preferences.h

 // Copyright 2014 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 CONTENT_PUBLIC_COMMON_WEB_PREFERENCES_H_
 #define CONTENT_PUBLIC_COMMON_WEB_PREFERENCES_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 36 matching lines @@
 };
 
 enum V8ScriptStreamingMode {
   V8_SCRIPT_STREAMING_MODE_ALL,
   V8_SCRIPT_STREAMING_MODE_ONLY_ASYNC_AND_DEFER,
   V8_SCRIPT_STREAMING_MODE_ALL_PLUS_BLOCK_PARSER_BLOCKING,
   V8_SCRIPT_STREAMING_MODE_LAST =
       V8_SCRIPT_STREAMING_MODE_ALL_PLUS_BLOCK_PARSER_BLOCKING
 };
 
+enum ImageAnimationPolicy {
+  IMAGE_ANIMATION_POLICY_ALLOWED,
+  IMAGE_ANIMATION_POLICY_ANIMATION_ONCE,
+  IMAGE_ANIMATION_POLICY_NO_ANIMATION
+};
+
 // The ISO 15924 script code for undetermined script aka Common. It's the
 // default used on WebKit's side to get/set a font setting when no script is
 // specified.
 CONTENT_EXPORT extern const char kCommonScript[];
 
 // A struct for managing blink's settings.
 //
 // Adding new values to this class probably involves updating
 // blink::WebSettings, content/common/view_messages.h, browser/tab_contents/
 // render_view_host_delegate_helper.cc, and browser/profiles/profile.cc.
@@ skipping 106 matching lines @@
   // This flags corresponds to a Page's Settings' setCookieEnabled state. It
   // only controls whether or not the "document.cookie" field is properly
   // connected to the backing store, for instance if you wanted to be able to
   // define custom getters and setters from within a unique security content
   // without raising a DOM security exception.
   bool cookie_enabled;
 
   // This flag indicates whether H/W accelerated video decode is enabled for
   // pepper plugins. Defaults to false.
   bool pepper_accelerated_video_decode_enabled;
+  ImageAnimationPolicy animation_policy;
 
 #if defined(OS_ANDROID)
   bool text_autosizing_enabled;
   float font_scale_factor;
   float device_scale_adjustment;
   bool force_enable_zoom;
   bool fullscreen_supported;
   bool double_tap_to_zoom_enabled;
   bool user_gesture_required_for_media_playback;
   GURL default_video_poster_url;
@@ skipping 14 matching lines @@
   // We try to keep the default values the same as the default values in
   // chrome, except for the cases where it would require lots of extra work for
   // the embedder to use the same default value.
   WebPreferences();
   ~WebPreferences();
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_COMMON_WEB_PREFERENCES_H_