Add a hook for capturing a user profile photo and saving it to file and local state.

chrome/browser/chromeos/login/user_manager.cc

Index: chrome/browser/chromeos/login/user_manager.cc
diff --git a/chrome/browser/chromeos/login/user_manager.cc b/chrome/browser/chromeos/login/user_manager.cc
index aebcec90039d4c49ddcce162b67813cbc66626a4..8dd7e1725b8bde6b2d9807ea7e69211e5ba1e52e 100644
--- a/chrome/browser/chromeos/login/user_manager.cc
+++ b/chrome/browser/chromeos/login/user_manager.cc
@@ -75,6 +75,7 @@ void SavePathToLocalState(const std::string& username,
   images_update->SetWithoutPathExpansion(username, new StringValue(image_path));
   DVLOG(1) << "Saving path to user image in Local State.";
   local_state->SavePersistentPrefs();
+  UserManager::Get()->NotifyLocalStateChanged();
 }
 
 // Saves image to file with specified path. Runs on FILE thread.
@@ -690,4 +691,19 @@ void UserManager::set_current_user_is_owner(bool current_user_is_owner) {
   current_user_is_owner_ = current_user_is_owner;
 }
 
+void UserManager::AddObserver(Observer* obs) {
+  observer_list_.AddObserver(obs);
+}
+
+void UserManager::RemoveObserver(Observer* obs) {
+  observer_list_.RemoveObserver(obs);
+}
+
+void UserManager::NotifyLocalStateChanged() {
+ FOR_EACH_OBSERVER(
+    Observer,
+    observer_list_,
+    LocalStateChanged(this));
+}
+
 }  // namespace chromeos