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 b6e6de5ecbbf505c069ddec6b2190416543aff33..9313d3b417275326433b3103e81fb33fb90935ac 100644
--- a/chrome/browser/chrome_content_browser_client.cc
+++ b/chrome/browser/chrome_content_browser_client.cc
@@ -624,6 +624,12 @@ ContentSettingToPermissionStatus(ContentSetting setting) {
 
 namespace chrome {
 
+#if defined(ENABLE_EXTENSIONS)
+const char kAnimationPolicyAllowed[] = "allowed";

[Lei Zhang, 2015/01/30 20:18:08]

These probably should go in chrome/browser/accessibility

[je_julie(Not used), 2015/01/31 07:25:35]

OK. I think I'd better add animation_policy_prefs again and put const string
definitions and add the API for registry->RegisterStringPref.

+const char kAnimationPolicyOnce[] = "once";
+const char kAnimationPolicyNone[] = "none";
+#endif
+
 ChromeContentBrowserClient::ChromeContentBrowserClient()
     : prerender_tracker_(NULL),
       weak_factory_(this) {
@@ -2278,6 +2284,18 @@ void ChromeContentBrowserClient::OverrideWebkitPrefs(
   web_prefs->hyperlink_auditing_enabled =
       prefs->GetBoolean(prefs::kEnableHyperlinkAuditing);
 
+#if defined(ENABLE_EXTENSIONS)
+  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;
+#endif
+
   // Make sure we will set the default_encoding with canonical encoding name.
   web_prefs->default_encoding =
       CharacterEncoding::GetCanonicalEncodingNameByAliasName(