Add new extension APIs related to animation policy.

chrome/browser/chrome_content_browser_client.h

 // 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.
 
 #ifndef CHROME_BROWSER_CHROME_CONTENT_BROWSER_CLIENT_H_
 #define CHROME_BROWSER_CHROME_CONTENT_BROWSER_CLIENT_H_
 
 #include <set>
 #include <string>
 #include <utility>
@@ skipping 23 matching lines @@
 namespace prerender {
 class PrerenderTracker;
 }
 
 namespace user_prefs {
 class PrefRegistrySyncable;
 }
 
 namespace chrome {
 
+#if defined(ENABLE_EXTENSIONS)
+extern const char kAnimationPolicyAllowed[];
+extern const char kAnimationPolicyOnce[];
+extern const char kAnimationPolicyNone[];
+#endif
+
 class ChromeContentBrowserClient : public content::ContentBrowserClient {
  public:
   ChromeContentBrowserClient();
   ~ChromeContentBrowserClient() override;
 
   static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
 
   // Notification that the application locale has changed. This allows us to
   // update our I/O thread cache of this value.
   static void SetApplicationLocale(const std::string& locale);
@@ skipping 277 matching lines @@
   std::vector<ChromeContentBrowserClientParts*> extra_parts_;
 
   base::WeakPtrFactory<ChromeContentBrowserClient> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeContentBrowserClient);
 };
 
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_CHROME_CONTENT_BROWSER_CLIENT_H_