Add handling for immersive fullscreen to the zoom bubble

chrome/browser/ui/views/frame/immersive_mode_controller_stub.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/ui/views/frame/immersive_mode_controller_stub.h"
 
 #include "base/logging.h"
 
 ImmersiveModeControllerStub::ImmersiveModeControllerStub() {
 }
@@ skipping 41 matching lines @@
     views::Widget* widget,
     int y_offset) {
 }
 
 void ImmersiveModeControllerStub::UnanchorWidgetFromTopContainer(
     views::Widget* widget) {
 }
 
 void ImmersiveModeControllerStub::OnTopContainerBoundsChanged() {
 }
+
+void ImmersiveModeControllerStub::AddObserver(Observer* observer) {
+}
+
+void ImmersiveModeControllerStub::RemoveObserver(Observer* observer) {
+}