Mac: Implement about:memory.

chrome/browser/memory_details.h

 // Copyright (c) 2006-2008 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_MEMORY_DETAILS_H_
 #define CHROME_BROWSER_MEMORY_DETAILS_H_
 
 #include <vector>
 
 #include "base/process_util.h"
@@ skipping 34 matching lines @@
 
 typedef std::vector<ProcessMemoryInformation> ProcessMemoryInformationList;
 
 // Browser Process Information.
 struct ProcessData {
   std::wstring name;
   std::wstring process_name;
   ProcessMemoryInformationList processes;
 };
 
+#if defined(OS_MACOSX)
+class ProcessInfoSnapshot;
+#endif
+
 // MemoryDetails fetches memory details about current running browsers.
 // Because this data can only be fetched asynchronously, callers use
 // this class via a callback.
 //
 // Example usage:
 //
 //    class MyMemoryDetailConsumer : public MemoryDetails {
 //
 //      MyMemoryDetailConsumer() : MemoryDetails(true) {
 //        StartFetch();  // Starts fetching details.
@@ skipping 31 matching lines @@
   void CollectChildInfoOnIOThread();
 
   // Collect current process information from the OS and store it
   // for processing.  If data has already been collected, clears old
   // data and re-collects the data.
   // Note - this function enumerates memory details from many processes
   // and is fairly expensive to run, hence it's run on the file thread.
   // The parameter holds information about processes from the IO thread.
   void CollectProcessData(std::vector<ProcessMemoryInformation>);
 
+#if defined(OS_MACOSX)
+  // A helper for |CollectProcessData()|, collecting data on the Chrome/Chromium
+  // process with PID |pid|. The collected data is added to the state of the
+  // object (in |process_data_|).
+  void CollectProcessDataChrome(
+      const std::vector<ProcessMemoryInformation>& child_info,
+      base::ProcessId pid,
+      const ProcessInfoSnapshot& process_info);
+#endif
+
   // Collect child process information on the UI thread.  Information about
   // renderer processes is only available there.
   void CollectChildInfoOnUIThread();
 
   // Each time we take a memory sample, we do a little work to update
   // the global histograms for tracking memory usage.
   void UpdateHistograms();
 
   // Returns a pointer to the ProcessData structure for Chrome.
   ProcessData* ChromeBrowser();
 
   std::vector<ProcessData> process_data_;
 
   DISALLOW_EVIL_CONSTRUCTORS(MemoryDetails);
 };
 
 #endif  // CHROME_BROWSER_MEMORY_DETAILS_H_