Add UMA metrics and histograms for locally managed users.

chrome/browser/managed_mode/managed_mode_interstitial.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 "chrome/browser/managed_mode/managed_mode_interstitial.h"
 
 #include "base/i18n/rtl.h"
+#include "base/metrics/histogram.h"
 #include "chrome/browser/managed_mode/managed_mode_navigation_observer.h"
 #include "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/tab_contents/tab_util.h"
 #include "chrome/browser/ui/webui/web_ui_util.h"
 #include "chrome/common/jstemplate_builder.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/url_constants.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/interstitial_page.h"
@@ skipping 91 matching lines @@
 
   base::StringPiece html(
       ResourceBundle::GetSharedInstance().GetRawDataResource(
           IDR_MANAGED_MODE_BLOCK_INTERSTITIAL_HTML));
 
   jstemplate_builder::UseVersion2 version;
   return jstemplate_builder::GetI18nTemplateHtml(html, &strings);
 }
 
 void ManagedModeInterstitial::CommandReceived(const std::string& command) {
+  // For use in histograms.
+  enum Commands {
+    PREVIEW,
+    BACK,
+    NTP,
+    HISTOGRAM_BOUNDING_VALUE
+  };
+
   if (command == "\"preview\"") {
+    UMA_HISTOGRAM_ENUMERATION("ManagedMode.BlockingInterstitialCommand",
+                              PREVIEW,
+                              HISTOGRAM_BOUNDING_VALUE);
     interstitial_page_->Proceed();
     return;
   }
 
   if (command == "\"back\"") {
+    UMA_HISTOGRAM_ENUMERATION("ManagedMode.BlockingInterstitialCommand",
+                              BACK,
+                              HISTOGRAM_BOUNDING_VALUE);
     interstitial_page_->DontProceed();
     return;
   }
 
   if (command == "\"ntp\"") {
+    UMA_HISTOGRAM_ENUMERATION("ManagedMode.BlockingInterstitialCommand",
+                              NTP,
+                              HISTOGRAM_BOUNDING_VALUE);
     GoToNewTabPage();
     return;
   }
 
   NOTREACHED();
 }
 
 void ManagedModeInterstitial::OnProceed() {
   DispatchContinueRequest(true);
 }
 
 void ManagedModeInterstitial::OnDontProceed() {
   DispatchContinueRequest(false);
 }
 
 void ManagedModeInterstitial::DispatchContinueRequest(bool continue_request) {
   BrowserThread::PostTask(BrowserThread::IO, FROM_HERE,
                           base::Bind(callback_, continue_request));
 }