Add LOCAL_ prefix to non-UMA histogram macros.

chrome/browser/metrics/chrome_stability_metrics_provider.cc

 // Copyright 2014 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 "chrome/browser/metrics/chrome_stability_metrics_provider.h"
 
 #include <vector>
 
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
@@ skipping 169 matching lines @@
   if (PluginMetricsProvider::IsPluginProcess(data.process_type))
     return;
 #endif
 
   IncrementPrefValue(prefs::kStabilityChildProcessCrashCount);
 }
 
 void ChromeStabilityMetricsProvider::LogLoadStarted(
     content::WebContents* web_contents) {
   content::RecordAction(base::UserMetricsAction("PageLoad"));
-  HISTOGRAM_ENUMERATION("Chrome.UmaPageloadCounter", 1, 2);
+  // TODO(asvitkine): Check if this is used for anything and if not, remove.
+  LOCAL_HISTOGRAM_BOOLEAN("Chrome.UmaPageloadCounter", true);
   IncrementPrefValue(prefs::kStabilityPageLoadCount);
   IncrementLongPrefsValue(prefs::kUninstallMetricsPageLoadCount);
   // We need to save the prefs, as page load count is a critical stat, and it
   // might be lost due to a crash :-(.
 }
 
 void ChromeStabilityMetricsProvider::LogRendererCrash(
     content::RenderProcessHost* host,
     base::TerminationStatus status,
     int exit_code) {
@@ skipping 24 matching lines @@
                              was_extension_process ? 2 : 1);
   } else if (status == base::TERMINATION_STATUS_STILL_RUNNING) {
     UMA_HISTOGRAM_PERCENTAGE("BrowserRenderProcessHost.DisconnectedAlive",
                              was_extension_process ? 2 : 1);
   }
 }
 
 void ChromeStabilityMetricsProvider::LogRendererHang() {
   IncrementPrefValue(prefs::kStabilityRendererHangCount);
 }