Add UMA histogram to track the various sources that request the feedback app

chrome/browser/ui/sad_tab.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/sad_tab.h"
 
 #include "base/metrics/histogram_macros.h"
 #include "chrome/browser/net/referrer.h"
 #include "chrome/browser/ui/browser_finder.h"
 #include "chrome/browser/ui/chrome_pages.h"
@@ skipping 35 matching lines @@
 void RecordEvent(bool feedback, SadTabEvent event) {
   if (feedback) {
     UMA_HISTOGRAM_ENUMERATION("Tabs.SadTab.Feedback.Event", event,
                               SadTabEvent::MAX_SAD_TAB_EVENT);
   } else {
     UMA_HISTOGRAM_ENUMERATION("Tabs.SadTab.Reload.Event", event,
                               SadTabEvent::MAX_SAD_TAB_EVENT);
   }
 }
 
-const char kCategoryTagCrash[] = "Crash";
+constexpr char kCategoryTagCrash[] = "Crash";
 
 bool ShouldShowFeedbackButton() {
 #if defined(GOOGLE_CHROME_BUILD)
   const int kCrashesBeforeFeedbackIsDisplayed = 1;
 
   static int total_crashes = 0;
   return ++total_crashes > kCrashesBeforeFeedbackIsDisplayed;
 #else
   return false;
 #endif
@@ skipping 84 matching lines @@
 
   RecordEvent(show_feedback_button_, SadTabEvent::DISPLAYED);
 }
 
 void SadTab::PerformAction(SadTab::Action action) {
   DCHECK(recorded_paint_);
   switch (action) {
     case Action::BUTTON:
       RecordEvent(show_feedback_button_, SadTabEvent::BUTTON_CLICKED);
       if (show_feedback_button_) {
-        chrome::ShowFeedbackPage(
-            chrome::FindBrowserWithWebContents(web_contents_),
-            l10n_util::GetStringUTF8(kind_ == chrome::SAD_TAB_KIND_CRASHED
+        ShowFeedbackPage(
+            FindBrowserWithWebContents(web_contents_),
+            kFeedbackSourceSadTabPage,
+            l10n_util::GetStringUTF8(kind_ == SAD_TAB_KIND_CRASHED
                                          ? IDS_CRASHED_TAB_FEEDBACK_MESSAGE
                                          : IDS_KILLED_TAB_FEEDBACK_MESSAGE),
             std::string(kCategoryTagCrash));
       } else {
         web_contents_->GetController().Reload(content::ReloadType::NORMAL,
                                               true);
       }
       break;
     case Action::HELP_LINK:
       RecordEvent(show_feedback_button_, SadTabEvent::HELP_LINK_CLICKED);
@@ skipping 29 matching lines @@
     // Fall through
     case chrome::SAD_TAB_KIND_KILLED:
       UMA_SAD_TAB_COUNTER("Tabs.SadTab.KillCreated");
       LOG(WARNING) << "Tab Killed: "
                    << web_contents->GetURL().GetOrigin().spec();
       break;
   }
 }
 
 }  // namespace chrome