Show gpu process stats in about:tcmalloc

chrome/browser/browser_about_handler.h

 // Copyright (c) 2011 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.
 
 #ifndef CHROME_BROWSER_BROWSER_ABOUT_HANDLER_H_
 #define CHROME_BROWSER_BROWSER_ABOUT_HANDLER_H_
 #pragma once
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "base/process.h"
 #include "base/stringprintf.h"
 #include "build/build_config.h"  // USE_TCMALLOC
+#include "content/public/common/process_type.h"
 
 template <typename T> struct DefaultSingletonTraits;
 class GURL;
 
 namespace content {
 class BrowserContext;
 }
 
 // Returns true if the given URL will be handled by the browser about handler.
 // Nowadays, these go through the webui, so the return is always false.
@@ skipping 24 matching lines @@
   // Returns the singleton instance.
   static AboutTcmallocOutputs* GetInstance();
 
   AboutTcmallocOutputsType* outputs() { return &outputs_; }
 
   // Records the output for a specified header string.
   void SetOutput(const std::string& header, const std::string& output) {
     outputs_[header] = output;
   }
 
-  // Callback for output returned from renderer processes.  Adds
-  // the output for a canonical renderer header string that
+  // Callback for output returned from a child process.  Adds
+  // the output for a canonical process-specific header string that
   // incorporates the pid.
-  void RendererCallback(base::ProcessId pid, const std::string& output) {
-    SetOutput(
-        base::StringPrintf("Renderer PID %d", static_cast<int>(pid)), output);
-  }
+  void OnStatsForChildProcess(base::ProcessId pid,
+                              content::ProcessType process_type,
+                              const std::string& output);
 
  private:
   AboutTcmallocOutputs();
   ~AboutTcmallocOutputs();
 
   AboutTcmallocOutputsType outputs_;
 
   friend struct DefaultSingletonTraits<AboutTcmallocOutputs>;
 
   DISALLOW_COPY_AND_ASSIGN(AboutTcmallocOutputs);
 };
-
-// Glue between the callback task and the method in the singleton.
-void AboutTcmallocRendererCallback(base::ProcessId pid,
-                                   const std::string& output);
 #endif  // defined(USE_TCMALLOC)
 
 #endif  // CHROME_BROWSER_BROWSER_ABOUT_HANDLER_H_