Adds switch to disable generating mouse events from touch events and

ui/aura/env.cc

 // Copyright (c) 2012 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 "ui/aura/env.h"
 #include "ui/aura/env_observer.h"
 #include "ui/aura/monitor_manager.h"
 #include "ui/aura/root_window_host.h"
 #include "ui/aura/window.h"
 #include "ui/compositor/compositor.h"
 
 #if defined(USE_X11)
 #include "ui/aura/monitor_change_observer_x11.h"
 #endif
 
 namespace aura {
 
 // static
 Env* Env::instance_ = NULL;
 
 ////////////////////////////////////////////////////////////////////////////////
 // Env, public:
 
 Env::Env()
     : mouse_button_flags_(0),
+      is_touch_down_(false),
       stacking_client_(NULL) {
 }
 
 Env::~Env() {
   ui::Compositor::Terminate();
 }
 
 // static
 Env* Env::GetInstance() {
   if (!instance_) {
@@ skipping 42 matching lines @@
   monitor_change_observer_.reset(new internal::MonitorChangeObserverX11);
 #endif
   ui::Compositor::Initialize(false);
 }
 
 void Env::NotifyWindowInitialized(Window* window) {
   FOR_EACH_OBSERVER(EnvObserver, observers_, OnWindowInitialized(window));
 }
 
 }  // namespace aura