Add new extension APIs related to animation policy.

content/browser/renderer_host/render_view_host_impl.cc

Index: content/browser/renderer_host/render_view_host_impl.cc
diff --git a/content/browser/renderer_host/render_view_host_impl.cc b/content/browser/renderer_host/render_view_host_impl.cc
index bd37a3cbb05e221e57d090cad2642c1a0d5d627b..04426da78cd53a714f01cc0714ac014e8b90a6f1 100644
--- a/content/browser/renderer_host/render_view_host_impl.cc
+++ b/content/browser/renderer_host/render_view_host_impl.cc
@@ -24,6 +24,7 @@
 #include "base/time/time.h"
 #include "base/values.h"
 #include "cc/base/switches.h"
+#include "content/browser/accessibility/browser_accessibility_state_impl.h"
 #include "content/browser/child_process_security_policy_impl.h"
 #include "content/browser/dom_storage/session_storage_namespace_impl.h"
 #include "content/browser/frame_host/frame_tree.h"
@@ -518,6 +519,15 @@ WebPreferences RenderViewHostImpl::ComputeWebkitPrefs(const GURL& url) {
   prefs.v8_script_streaming_mode =
       V8_SCRIPT_STREAMING_MODE_ONLY_ASYNC_AND_DEFER;
 
+  std::string image_animation_policy =
+      BrowserAccessibilityStateImpl::GetInstance()->GetImageAnimationPolicy();
+  if (image_animation_policy == "Allowed")
+      prefs.animation_policy = IMAGE_ANIMATION_POLICY_ALLOWED;

[dmazzoni, 2014/12/08 07:46:01]

nit: just 2 spaces indent for an "if" block. (Line continuations are 4 spaces,
those are correct.)

+  else if (image_animation_policy == "Once")
+      prefs.animation_policy = IMAGE_ANIMATION_POLICY_ANIMATION_ONCE;
+  else if (image_animation_policy == "None")
+      prefs.animation_policy = IMAGE_ANIMATION_POLICY_NO_ANIMATION;
+
   GetContentClient()->browser()->OverrideWebkitPrefs(this, url, &prefs);
   return prefs;
 }