[DevTools] Pass client initiating DevToolsAgentHost::inspectElement.

content/renderer/devtools/devtools_agent.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/renderer/devtools/devtools_agent.h"
 
 #include <stddef.h>
 
 #include <map>
 
@@ skipping 260 matching lines @@
         base::Bind(&DevToolsAgent::GotManifest,
         weak_factory_.GetWeakPtr(), session_id, call_id));
     return;
   }
   GetWebAgent()->dispatchOnInspectorBackend(session_id,
                                             call_id,
                                             WebString::fromUTF8(method),
                                             WebString::fromUTF8(message));
 }
 
-void DevToolsAgent::OnInspectElement(int x, int y) {
+void DevToolsAgent::OnInspectElement(int session_id, int x, int y) {
   blink::WebFloatRect point_rect(x, y, 0, 0);
   frame_->GetRenderWidget()->convertWindowToViewport(&point_rect);
-  GetWebAgent()->inspectElementAt(WebPoint(point_rect.x, point_rect.y));
+  GetWebAgent()->inspectElementAt(
+      session_id, WebPoint(point_rect.x, point_rect.y));
 }
 
 void DevToolsAgent::OnRequestNewWindowACK(bool success) {
   if (!success)
     GetWebAgent()->failedToRequestDevTools();
 }
 
 void DevToolsAgent::ContinueProgram() {
   GetWebAgent()->continueProgram();
 }
@@ skipping 48 matching lines @@
   result->Set("errors", errors.release());
   response->Set("result", result.release());
 
   std::string json_message;
   base::JSONWriter::Write(*response, &json_message);
   SendChunkedProtocolMessage(this, routing_id(), session_id, call_id,
                              json_message, std::string());
 }
 
 }  // namespace content