[DevTools] Added Runtime.awaitPromise protocol method

third_party/WebKit/Source/platform/inspector_protocol/DispatcherBase.cpp

 // Copyright 2016 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 "platform/inspector_protocol/DispatcherBase.h"
 
 #include "platform/inspector_protocol/FrontendChannel.h"
 #include "platform/inspector_protocol/Parser.h"
 
 namespace blink {
@@ skipping 16 matching lines @@
 
 DispatcherBase::Callback::~Callback() = default;
 
 void DispatcherBase::Callback::dispose()
 {
     m_backendImpl = nullptr;
 }
 
 void DispatcherBase::Callback::sendIfActive(std::unique_ptr<protocol::DictionaryValue> partialMessage, const ErrorString& invocationError)
 {
-    if (!m_backendImpl->get())
+    if (!m_backendImpl || !m_backendImpl->get())
         return;
     m_backendImpl->get()->sendResponse(m_callId, invocationError, nullptr, std::move(partialMessage));
     m_backendImpl = nullptr;
 }
 
 DispatcherBase::DispatcherBase(FrontendChannel* frontendChannel)
     : m_frontendChannel(frontendChannel) { }
 
 DispatcherBase::~DispatcherBase()
 {
@@ skipping 116 matching lines @@
         reportProtocolError(m_frontendChannel, callId, DispatcherBase::MethodNotFound, "'" + method + "' wasn't found", nullptr);
         return;
     }
     it->second->dispatch(callId, method, std::move(messageObject));
 }
 
 UberDispatcher::~UberDispatcher() = default;
 
 } // namespace protocol
 } // namespace blink