Log NTP hovers in 1993 clients

chrome/browser/ui/search/instant_controller.cc

 // Copyright 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/ui/search/instant_controller.h"
 
 #include "base/metrics/histogram.h"
 #include "base/prefs/pref_service.h"
 #include "base/strings/stringprintf.h"
 #include "chrome/browser/content_settings/content_settings_provider.h"
@@ skipping 267 matching lines @@
 
 void InstantController::ActiveTabChanged() {
   if (!extended_enabled())
     return;
 
   LOG_INSTANT_DEBUG_EVENT(this, "ActiveTabChanged");
   ResetInstantTab();
 }
 
 void InstantController::TabDeactivated(content::WebContents* contents) {
+  // If user is deactivating an NTP tab, log the number of mouseovers for this
+  // NTP session.
+  if (chrome::IsInstantNTP(contents))
+    InstantNTP::EmitMouseoverCount(contents);
 }
 
 void InstantController::ThemeInfoChanged(
     const ThemeBackgroundInfo& theme_info) {
   if (!extended_enabled())
     return;
 
   if (ntp_)
     ntp_->sender()->SendThemeBackgroundInfo(theme_info);
   if (instant_tab_)
@@ skipping 371 matching lines @@
 
 bool InstantController::InStartup() const {
   // TODO(shishir): This is not completely reliable. Find a better way to detect
   // startup time.
   return !browser_->GetActiveWebContents();
 }
 
 InstantService* InstantController::GetInstantService() const {
   return InstantServiceFactory::GetForProfile(profile());
 }