Adding UMA stats to the translate UI so we can get user usage...

chrome/browser/views/infobars/translate_infobars.cc

 // Copyright (c) 2010 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/views/infobars/translate_infobars.h"
 
 #include "app/gfx/canvas.h"
 #include "app/l10n_util.h"
 #include "app/resource_bundle.h"
 #include "base/utf_string_conversions.h"
@@ skipping 235 matching lines @@
   options_menu_button_ = CreateMenuButton(kMenuIDOptions,
       l10n_util::GetString(IDS_TRANSLATE_INFOBAR_OPTIONS));
   AddChildView(options_menu_button_);
 
   // Create state-dependent controls.
   UpdateState(GetDelegate()->state());
 
   // Register for PAGE_TRANSLATED notification.
   notification_registrar_.Add(this, NotificationType::PAGE_TRANSLATED,
       Source<TabContents>(GetDelegate()->tab_contents()));
+
+  if (GetDelegate()->state() == TranslateInfoBarDelegate::kBeforeTranslate)
+    UMA_HISTOGRAM_COUNTS("Translate.ShowBeforeTranslateInfobar", 1);
 }
 
 TranslateInfoBar::~TranslateInfoBar() {
 }
 
 void TranslateInfoBar::UpdateState(
     TranslateInfoBarDelegate::TranslateState new_state) {
   // Create and initialize state-dependent controls if necessary.
   switch (new_state) {
     case TranslateInfoBarDelegate::kAfterTranslate:
@@ skipping 275 matching lines @@
   return true;
 }
 
 bool TranslateInfoBar::GetAcceleratorForCommandId(int command_id,
     views::Accelerator* accelerator) {
   return false;
 }
 
 void TranslateInfoBar::ExecuteCommand(int command_id) {
   if (command_id >= IDC_TRANSLATE_TARGET_LANGUAGE_BASE) {
+    UMA_HISTOGRAM_COUNTS("Translate.ModifyTargetLang", 1);
     OnLanguageModified(target_language_menu_button_,
         command_id - IDC_TRANSLATE_TARGET_LANGUAGE_BASE);
   } else if (command_id >= IDC_TRANSLATE_ORIGINAL_LANGUAGE_BASE) {
+    UMA_HISTOGRAM_COUNTS("Translate.ModifyOriginalLang", 1);
     OnLanguageModified(original_language_menu_button_,
         command_id - IDC_TRANSLATE_ORIGINAL_LANGUAGE_BASE);
   } else {
     switch (command_id) {
       case IDC_TRANSLATE_OPTIONS_NEVER_TRANSLATE_LANG:
+        UMA_HISTOGRAM_COUNTS("Translate.NeverTranslateLang", 1);
         GetDelegate()->ToggleLanguageBlacklist();
         break;
 
       case IDC_TRANSLATE_OPTIONS_NEVER_TRANSLATE_SITE:
+        UMA_HISTOGRAM_COUNTS("Translate.NeverTranslateSite", 1);
         GetDelegate()->ToggleSiteBlacklist();
         break;
 
       case IDC_TRANSLATE_OPTIONS_ALWAYS:
+        UMA_HISTOGRAM_COUNTS("Translate.AlwaysTranslateLang", 1);
         GetDelegate()->ToggleAlwaysTranslate();
         break;
 
       case IDC_TRANSLATE_OPTIONS_ABOUT: {
         TabContents* tab_contents = GetDelegate()->tab_contents();
         if (tab_contents) {
           string16 url = l10n_util::GetStringUTF16(
               IDS_ABOUT_GOOGLE_TRANSLATE_URL);
           tab_contents->OpenURL(GURL(url), GURL(), NEW_FOREGROUND_TAB,
               PageTransition::LINK);
         }
         break;
       }
 
       default:
         NOTREACHED() << "Invalid command id from menu.";
         break;
     }
   }
 }
 
 // TranslateInfoBar, views::ButtonListener overrides: --------------------------
 
 void TranslateInfoBar::ButtonPressed(
     views::Button* sender, const views::Event& event) {
   if (sender == accept_button_) {
     GetDelegate()->Translate();
     UpdateState(GetDelegate()->state());
+    UMA_HISTOGRAM_COUNTS("Translate.Translate", 1);
   } else if (sender == deny_button_) {
     GetDelegate()->TranslationDeclined();
+    UMA_HISTOGRAM_COUNTS("Translate.DeclineTranslate", 1);
     RemoveInfoBar();
   } else {  // Let base InfoBar handle close button.
     InfoBar::ButtonPressed(sender, event);
   }
 }
 
 // TranslateInfoBar, NotificationObserver overrides: ---------------------------
 
 void TranslateInfoBar::Observe(NotificationType type,
     const NotificationSource& source, const NotificationDetails& details) {
@@ skipping 131 matching lines @@
 inline int TranslateInfoBar::GetSpacingAfterFirstLanguageButton() const {
   return (GetDelegate()->state() == TranslateInfoBarDelegate::kBeforeTranslate ?
       10 : kButtonInLabelSpacing);
 }
 
 // TranslateInfoBarDelegate, InfoBarDelegate overrides: ------------------
 
 InfoBar* TranslateInfoBarDelegate::CreateInfoBar() {
   return new TranslateInfoBar(this);
 }