DevTools: Fixed AndroidDeviceManager destruction

chrome/browser/devtools/device/devtools_android_bridge.cc

 // Copyright 2014 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/devtools/device/devtools_android_bridge.h"
 
 #include <map>
 #include <vector>
 
 #include "base/base64.h"
@@ skipping 1241 matching lines @@
 // static
 bool DevToolsAndroidBridge::HasDevToolsWindow(const std::string& agent_id) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   return g_host_delegates.Get().find(agent_id) != g_host_delegates.Get().end();
 }
 
 DevToolsAndroidBridge::~DevToolsAndroidBridge() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   DCHECK(device_list_listeners_.empty());
   DCHECK(device_count_listeners_.empty());
-  if (device_manager_)
-    device_message_loop()->PostTask(FROM_HERE,
-        base::Bind(&AndroidDeviceManager::Stop, device_manager_));
+  if (device_manager_) {
+    AndroidDeviceManager* raw_ptr = device_manager_.get();
+    device_manager_->AddRef();
+    device_manager_ = NULL;
+    device_message_loop()->ReleaseSoon(FROM_HERE, raw_ptr);
+  }
 }
 
 void DevToolsAndroidBridge::RequestDeviceList() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
   DCHECK(device_manager_);
 
   if (device_list_listeners_.empty())
     return;
 
   new DiscoveryRequest(
@@ skipping 75 matching lines @@
   PrefService* service = profile_->GetPrefs();
   const PrefService::Preference* pref =
       service->FindPreference(prefs::kDevToolsDiscoverUsbDevicesEnabled);
   const base::Value* pref_value = pref->GetValue();
 
   bool enabled;
   if (pref_value->GetAsBoolean(&enabled) && enabled) {
     device_providers_.push_back(new UsbDeviceProvider(profile_));
   }
 }