[Android] Improve sad tab strings

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 18 matching lines @@
 // This macro uses a static counter to track how many times it's hit in a
 // session. See Tabs.SadTab.CrashCreated in histograms.xml for details.
 #define UMA_SAD_TAB_COUNTER(histogram_name)           \
   {                                                   \
     static int count = 0;                             \
     ++count;                                          \
     UMA_HISTOGRAM_COUNTS_1000(histogram_name, count); \
   }
 
 // This enum backs an UMA histogram, so it should be treated as append-only.
+// A Java counterpart exists in
+// org.chromium.chrome.browser.tab.SadTabViewFactory.
 enum SadTabEvent {
   DISPLAYED,
   BUTTON_CLICKED,
   HELP_LINK_CLICKED,
   MAX_SAD_TAB_EVENT
 };
 
 void RecordEvent(bool feedback, SadTabEvent event) {
   if (feedback) {
     UMA_HISTOGRAM_ENUMERATION("Tabs.SadTab.Feedback.Event", event,
@@ skipping 155 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