[DevTools] Pass client initiating DevToolsAgentHost::inspectElement.

content/browser/devtools/devtools_agent_host_impl.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 "content/browser/devtools/devtools_agent_host_impl.h"
 
 #include <map>
 #include <vector>
 
 #include "base/guid.h"
@@ skipping 135 matching lines @@
 
 void DevToolsAgentHostImpl::InnerDetach() {
   Detach();
   io_context_.DiscardAllStreams();
 }
 
 bool DevToolsAgentHostImpl::IsAttached() {
   return !!client_;
 }
 
-void DevToolsAgentHostImpl::InspectElement(int x, int y) {
+void DevToolsAgentHostImpl::InspectElement(
+    DevToolsAgentHostClient* client,
+    int x,
+    int y) {
+ if (!client_ || client_ != client)
+   return;
+ InspectElement(x, y);
 }
 
 std::string DevToolsAgentHostImpl::GetId() {
   return id_;
 }
 
 BrowserContext* DevToolsAgentHostImpl::GetBrowserContext() {
   return nullptr;
 }
 
@@ skipping 21 matching lines @@
   if (!client_)
     return;
 
   scoped_refptr<DevToolsAgentHostImpl> protect(this);
   // Clear |client_| before notifying it.
   DevToolsAgentHostClient* client = client_;
   client_ = NULL;
   client->AgentHostClosed(this, false);
 }
 
+void DevToolsAgentHostImpl::InspectElement(int x, int y) {
+}
+
 void DevToolsAgentHostImpl::SendMessageToClient(int session_id,
                                                 const std::string& message) {
   if (!client_)
     return;
   // Filter any messages from previous sessions.
   if (session_id != session_id_)
     return;
   client_->DispatchProtocolMessage(this, message);
 }
 
@@ skipping 95 matching lines @@
 
   if (chunk.is_last) {
     CHECK(message_buffer_.size() == message_buffer_size_);
     callback_.Run(chunk.session_id, message_buffer_);
     message_buffer_ = std::string();
     message_buffer_size_ = 0;
   }
 }
 
 }  // namespace content