Trigger chrome.storage.onChanged events for policy updates on the 'managed' namespace.

chrome/browser/extensions/settings/value_store_cache.h

Index: chrome/browser/extensions/settings/value_store_cache.h
diff --git a/chrome/browser/extensions/settings/value_store_cache.h b/chrome/browser/extensions/settings/value_store_cache.h
index a891db9a186de59f4e2c571049fa5367422f4956..7a2311b842d826395f508ccc68b22aed7799adcd 100644
--- a/chrome/browser/extensions/settings/value_store_cache.h
+++ b/chrome/browser/extensions/settings/value_store_cache.h
@@ -19,14 +19,20 @@ class Extension;
 
 // Each namespace of the storage API implements this interface.
 // Instances are created on the UI thread, but from then on live on the loop
-// returned by GetMessageLoop() and every methods (except GetMessageLoop())
-// are always called in that loop, including the destructor.
+// returned by GetMessageLoop() and every method (except GetMessageLoop()
+// and ShutdownOnUI()) is always called in that loop, including the destructor.
 class ValueStoreCache {
  public:
   typedef base::Callback<void(ValueStore*)> StorageCallback;
 
   virtual ~ValueStoreCache();
 
+  // This is invoked from the UI thread during destruction of the Profile that
+  // ultimately owns this object. Any Profile-related cleanups should be
+  // performed in this method, since the destructor will execute later, after
+  // the Profile is already gone.
+  virtual void ShutdownOnUI();
+
   // Returns the loop that the methods of this class should be invoked on.
   virtual scoped_refptr<base::MessageLoopProxy> GetMessageLoop() const = 0;