Stub for WebRTCDeviceProvider

chrome/browser/devtools/devtools_targets_ui.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/devtools/devtools_targets_ui.h"
 
 #include "base/memory/weak_ptr.h"
 #include "base/stl_util.h"
 #include "base/strings/stringprintf.h"
 #include "base/values.h"
@@ skipping 301 matching lines @@
 }
 
 AdbTargetsUIHandler::~AdbTargetsUIHandler() {
   android_bridge_->RemoveDeviceListListener(this);
 }
 
 static void CallOnTarget(
     const DevToolsTargetsUIHandler::TargetCallback& callback,
     DevToolsAndroidBridge* bridge,
     scoped_refptr<DevToolsAndroidBridge::RemotePage> page) {
-  callback.Run(page.get() ? bridge->CreatePageTarget(page) : nullptr);
+  callback.Run(bridge && page.get() ? bridge->CreatePageTarget(page) : nullptr);
 }
 
 void AdbTargetsUIHandler::Open(
     const std::string& browser_id,
     const std::string& url,
     const DevToolsTargetsUIHandler::TargetCallback& callback) {
   RemoteBrowsers::iterator it = remote_browsers_.find(browser_id);
   if (it == remote_browsers_.end())
     return;
 
@@ skipping 195 matching lines @@
     device_status_dict->SetString(kPortForwardingBrowserId,
                                   SerializeBrowserId(sit->first));
 
     std::string device_id = base::StringPrintf(
         kAdbDeviceIdFormat,
         sit->first->serial().c_str());
     result.Set(device_id, device_status_dict);
   }
   callback_.Run(result);
 }