log the click activate/deactive of translate icon on location bar

chrome/browser/ui/views/translate/translate_bubble_view.cc

 // Copyright 2013 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/views/translate/translate_bubble_view.h"
 
 #include <stddef.h>
 #include <algorithm>
 #include <string>
 #include <utility>
@@ skipping 33 matching lines @@
 #include "ui/views/controls/label.h"
 #include "ui/views/controls/link.h"
 #include "ui/views/controls/styled_label.h"
 #include "ui/views/layout/box_layout.h"
 #include "ui/views/layout/grid_layout.h"
 #include "ui/views/layout/layout_constants.h"
 #include "ui/views/widget/widget.h"
 
 namespace {
 
-const char kTranslateBubbleUIEvent[] = "Translate.BubbleUiEvent";
-
 views::LabelButton* CreateBlueButton(views::ButtonListener* listener,
                                      const base::string16& label,
                                      int id) {
   views::LabelButton* button = new views::BlueButton(listener, label);
   button->set_id(id);
   return button;
 }
 
 views::LabelButton* CreateLabelButton(views::ButtonListener* listener,
                                       const base::string16& label,
@@ skipping 867 matching lines @@
   else
     label = l10n_util::GetStringUTF16(IDS_TRANSLATE_BUBBLE_ACCEPT);
   advanced_done_button_->SetText(label);
   advanced_done_button_->SizeToPreferredSize();
   if (advanced_view_)
     advanced_view_->Layout();
 }
 
 void TranslateBubbleView::ReportUiAction(
     translate::TranslateBubbleUiEvent action) {
-  UMA_HISTOGRAM_ENUMERATION(kTranslateBubbleUIEvent, action,
+  UMA_HISTOGRAM_ENUMERATION(translate::kTranslateBubbleUIEvent, action,
                             translate::TRANSLATE_BUBBLE_UI_EVENT_MAX);
 }