Fix inspector overlay when use-zoom-for-dsf is enabled.

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>
 
 #include "base/json/json_writer.h"
 #include "base/lazy_instance.h"
 #include "base/message_loop/message_loop.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/trace_event/trace_event.h"
 #include "content/common/devtools_messages.h"
 #include "content/common/frame_messages.h"
 #include "content/public/common/manifest.h"
 #include "content/renderer/devtools/devtools_client.h"
 #include "content/renderer/devtools/devtools_cpu_throttler.h"
 #include "content/renderer/manifest/manifest_manager.h"
 #include "content/renderer/render_frame_impl.h"
 #include "content/renderer/render_widget.h"
 #include "ipc/ipc_channel.h"
+#include "third_party/WebKit/public/platform/WebFloatRect.h"
 #include "third_party/WebKit/public/platform/WebPoint.h"
 #include "third_party/WebKit/public/platform/WebString.h"
 #include "third_party/WebKit/public/web/WebDevToolsAgent.h"
 #include "third_party/WebKit/public/web/WebLocalFrame.h"
 
 using blink::WebDevToolsAgent;
 using blink::WebDevToolsAgentClient;
 using blink::WebLocalFrame;
 using blink::WebPoint;
 using blink::WebString;
@@ skipping 220 matching lines @@
         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) {
-  GetWebAgent()->inspectElementAt(WebPoint(x, y));
+  blink::WebFloatRect point_rect(x, y, 0, 0);
+  frame_->GetRenderWidget()->convertWindowToViewport(&point_rect);
+  GetWebAgent()->inspectElementAt(WebPoint(point_rect.x, point_rect.y));
 }
 
 void DevToolsAgent::OnRequestNewWindowACK(bool success) {
   if (!success)
     GetWebAgent()->failedToRequestDevTools();
 }
 
 void DevToolsAgent::ContinueProgram() {
   GetWebAgent()->continueProgram();
 }
@@ skipping 47 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