Update Memory.RendererUsed only after Blink is initialized

content/renderer/renderer_main.cc

Index: content/renderer/renderer_main.cc
diff --git a/content/renderer/renderer_main.cc b/content/renderer/renderer_main.cc
index 242af718ce85afe6bd12ed563bdae98945c693e9..02d17e91d50d20a09f1caa5d887a6c6254dce209 100644
--- a/content/renderer/renderer_main.cc
+++ b/content/renderer/renderer_main.cc
@@ -22,7 +22,6 @@
 #include "base/time/time.h"
 #include "base/timer/hi_res_timer_manager.h"
 #include "content/child/child_process.h"
-#include "content/child/content_child_helpers.h"
 #include "content/common/content_constants_internal.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/main_function_params.h"
@@ -95,22 +94,6 @@ class RendererMessageLoopObserver : public base::MessageLoop::TaskObserver {
   DISALLOW_COPY_AND_ASSIGN(RendererMessageLoopObserver);
 };
 
-// For measuring memory usage after each task. Behind a command line flag.
-class MemoryObserver : public base::MessageLoop::TaskObserver {
- public:
-  MemoryObserver() {}
-  virtual ~MemoryObserver() {}
-
-  virtual void WillProcessTask(const base::PendingTask& pending_task) OVERRIDE {
-  }
-
-  virtual void DidProcessTask(const base::PendingTask& pending_task) OVERRIDE {
-    HISTOGRAM_MEMORY_KB("Memory.RendererUsed", GetMemoryUsageKB());
-  }
- private:
-  DISALLOW_COPY_AND_ASSIGN(MemoryObserver);
-};
-
 }  // namespace
 
 // mainline routine for running as the Renderer process
@@ -170,12 +153,6 @@ int RendererMain(const MainFunctionParams& parameters) {
 #endif
   main_message_loop.AddTaskObserver(&task_observer);
 
-  scoped_ptr<MemoryObserver> memory_observer;
-  if (parsed_command_line.HasSwitch(switches::kMemoryMetrics)) {
-    memory_observer.reset(new MemoryObserver());
-    main_message_loop.AddTaskObserver(memory_observer.get());
-  }
-
   base::PlatformThread::SetName("CrRendererMain");
 
   bool no_sandbox = parsed_command_line.HasSwitch(switches::kNoSandbox);