Add LOCAL_ prefix to non-UMA histogram macros.

content/renderer/render_thread_impl.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/render_thread_impl.h"
 
 #include <algorithm>
 #include <limits>
 #include <map>
 #include <vector>
@@ skipping 312 matching lines @@
 // 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());
+    LOCAL_HISTOGRAM_MEMORY_KB("Memory.RendererUsed", GetMemoryUsageKB());
   }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MemoryObserver);
 };
 
 RenderThreadImpl::HistogramCustomizer::HistogramCustomizer() {
   custom_histograms_.insert("V8.MemoryExternalFragmentationTotal");
   custom_histograms_.insert("V8.MemoryHeapSampleTotalCommitted");
   custom_histograms_.insert("V8.MemoryHeapSampleTotalUsed");
@@ skipping 1301 matching lines @@
   hidden_widget_count_--;
 
   if (!GetContentClient()->renderer()->RunIdleHandlerWhenWidgetsHidden()) {
     return;
   }
 
   ScheduleIdleHandler(kLongIdleHandlerDelayMs);
 }
 
 }  // namespace content