Add new extension APIs related to animation policy.

chrome/browser/chrome_content_browser_client.cc

Index: chrome/browser/chrome_content_browser_client.cc
diff --git a/chrome/browser/chrome_content_browser_client.cc b/chrome/browser/chrome_content_browser_client.cc
index f183f91cc765774be96018d7bf11cfbc1ed2c4cb..9632396d79f4590d601db836b2392a21003fa7d8 100644
--- a/chrome/browser/chrome_content_browser_client.cc
+++ b/chrome/browser/chrome_content_browser_client.cc
@@ -19,6 +19,7 @@
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/threading/sequenced_worker_pool.h"
+#include "chrome/browser/accessibility/animation_policy_prefs.h"
 #include "chrome/browser/browser_about_handler.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/browser_shutdown.h"
@@ -2277,6 +2278,16 @@ void ChromeContentBrowserClient::OverrideWebkitPrefs(
   web_prefs->hyperlink_auditing_enabled =
       prefs->GetBoolean(prefs::kEnableHyperlinkAuditing);
 
+  std::string image_animation_policy =
+      prefs->GetString(prefs::kAnimationPolicy);
+  if (image_animation_policy == kAnimationPolicyOnce)
+    web_prefs->animation_policy =
+        content::IMAGE_ANIMATION_POLICY_ANIMATION_ONCE;
+  else if (image_animation_policy == kAnimationPolicyNone)
+    web_prefs->animation_policy = content::IMAGE_ANIMATION_POLICY_NO_ANIMATION;
+  else
+    web_prefs->animation_policy = content::IMAGE_ANIMATION_POLICY_ALLOWED;
+
   // Make sure we will set the default_encoding with canonical encoding name.
   web_prefs->default_encoding =
       CharacterEncoding::GetCanonicalEncodingNameByAliasName(