Check in animation policy extension.

ui/accessibility/extensions/accessibility_extensions.gyp

Index: ui/accessibility/extensions/accessibility_extensions.gyp
diff --git a/ui/accessibility/extensions/accessibility_extensions.gyp b/ui/accessibility/extensions/accessibility_extensions.gyp
index 6734790831e09c41d417bf2cce149c01fa4542de..54dfb283de500593435f3a421b42e18ba27ce480 100644
--- a/ui/accessibility/extensions/accessibility_extensions.gyp
+++ b/ui/accessibility/extensions/accessibility_extensions.gyp
@@ -12,6 +12,7 @@
       'type': 'none',
       'dependencies': [
         'alt',
+        'animation',
         'caretbrowsing',
         'colorenhancer',
         'highcontrast',
@@ -65,6 +66,33 @@
       ],
     },
     {
+      'target_name': 'animation',
+      'type': 'none',
+      'copies': [
+        {
+          'destination': '<(dest_dir)/animation',
+          'files': [
+            'animation/manifest.json',
+            'animation/popup.html',
+            'animation/popup.js',
+            'animation/animation.png',
+          ]
+        }
+      ],
+      'actions': [
+        {
+          'action_name': 'animation_strings',
+          'variables': {
+            'grit_grd_file': 'strings/accessibility_extensions_strings.grd',
+            'grit_out_dir': '<(dest_dir)/animation',
+            # We don't generate any RC files, so no resource_ds file is needed.
+            'grit_resource_ids': '',
+          },
+          'includes': [ '../../../build/grit_action.gypi' ],
+        },
+      ],
+    },
+    {
       'target_name': 'caretbrowsing',
       'type': 'none',
       'copies': [