Native memory histograms for the browser.

content/renderer/renderer_main.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 "base/base_switches.h"
 #include "base/command_line.h"
 #include "base/debug/debugger.h"
 #include "base/debug/stack_trace.h"
 #include "base/debug/trace_event.h"
 #include "base/hi_res_timer_manager.h"
@@ skipping 71 matching lines @@
  private:
   base::TimeTicks begin_process_message_;
   base::Histogram* const process_times_;
   DISALLOW_COPY_AND_ASSIGN(RendererMessageLoopObserver);
 };
 
 // For measuring memory usage after each task. Behind a command line flag.
 class MemoryObserver : public MessageLoop::TaskObserver {
  public:
   MemoryObserver() {}
+  virtual ~MemoryObserver() {}
 
   virtual void WillProcessTask(base::TimeTicks time_posted) OVERRIDE {}
 
   virtual void DidProcessTask(base::TimeTicks time_posted) OVERRIDE {
     HISTOGRAM_MEMORY_KB("Memory.RendererUsed", webkit_glue::MemoryUsageKB());
   }
  private:
   DISALLOW_COPY_AND_ASSIGN(MemoryObserver);
 };
 
@@ skipping 121 matching lines @@
       MessageLoop::current()->Run();
       TRACE_EVENT_END_ETW("RendererMain.START_MSG_LOOP", 0, 0);
     }
   }
   platform.PlatformUninitialize();
   TRACE_EVENT_END_ETW("RendererMain", 0, "");
   return 0;
 }
 
 }  // namespace content