Add TestWebContentsFactory to content/public/test

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 "base/lazy_instance.h"
 #include "base/threading/thread_local.h"
 #include "ui/aura/env_observer.h"
 #include "ui/aura/input_state_lookup.h"
@@ skipping 29 matching lines @@
   DCHECK(env) << "Env::CreateInstance must be called before getting the "
                  "instance of Env.";
   return env;
 }
 
 // static
 void Env::DeleteInstance() {
   delete lazy_tls_ptr.Pointer()->Get();
 }
 
+// static
+bool Env::HasInstanceForTesting() {
+  return lazy_tls_ptr.Pointer()->Get() != nullptr;
+}
+
 void Env::AddObserver(EnvObserver* observer) {
   observers_.AddObserver(observer);
 }
 
 void Env::RemoveObserver(EnvObserver* observer) {
   observers_.RemoveObserver(observer);
 }
 
 bool Env::IsMouseButtonDown() const {
   return input_state_lookup_.get() ? input_state_lookup_->IsMouseButtonDown() :
@@ skipping 54 matching lines @@
 scoped_ptr<ui::EventTargetIterator> Env::GetChildIterator() const {
   return nullptr;
 }
 
 ui::EventTargeter* Env::GetEventTargeter() {
   NOTREACHED();
   return NULL;
 }
 
 }  // namespace aura