Remove UMA collection no longer needed.

chrome/browser/ui/javascript_dialogs/javascript_dialog_tab_helper.cc

 // Copyright 2016 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/javascript_dialogs/javascript_dialog_tab_helper.h"
 
 #include "base/bind.h"
 #include "base/feature_list.h"
 #include "base/metrics/histogram_macros.h"
 #include "chrome/browser/engagement/site_engagement_service.h"
@@ skipping 41 matching lines @@
     content::WebContents* alerting_web_contents,
     const GURL& origin_url,
     content::JavaScriptMessageType message_type,
     const base::string16& message_text,
     const base::string16& default_prompt_text,
     const DialogClosedCallback& callback,
     bool* did_suppress_message) {
   SiteEngagementService* site_engagement_service = SiteEngagementService::Get(
       Profile::FromBrowserContext(alerting_web_contents->GetBrowserContext()));
   double engagement_score = site_engagement_service->GetScore(origin_url);
-  switch (message_type) {
-    case content::JAVASCRIPT_MESSAGE_TYPE_ALERT:
-      UMA_HISTOGRAM_PERCENTAGE("JSDialogs.SiteEngagementOfDialogs.Alert",
-                               engagement_score);
-      break;
-    case content::JAVASCRIPT_MESSAGE_TYPE_CONFIRM:
-      UMA_HISTOGRAM_PERCENTAGE("JSDialogs.SiteEngagementOfDialogs.Confirm",
-                               engagement_score);
-      break;
-    case content::JAVASCRIPT_MESSAGE_TYPE_PROMPT:
-      UMA_HISTOGRAM_PERCENTAGE("JSDialogs.SiteEngagementOfDialogs.Prompt",
-                               engagement_score);
-      break;
-  }
   int32_t message_length = static_cast<int32_t>(message_text.length());
   if (engagement_score == 0) {
     UMA_HISTOGRAM_COUNTS("JSDialogs.CharacterCount.EngagementNone",
                          message_length);
   } else if (engagement_score < 1) {
     UMA_HISTOGRAM_COUNTS("JSDialogs.CharacterCount.EngagementLessThanOne",
                          message_length);
   } else if (engagement_score < 5) {
     UMA_HISTOGRAM_COUNTS("JSDialogs.CharacterCount.EngagementOneToFive",
                          message_length);
@@ skipping 132 matching lines @@
   DCHECK(dialog_);
 
   dialog_->CloseDialogWithoutCallback();
   if (!suppress_callback)
     dialog_callback_.Run(success, user_input);
 
   dialog_.reset();
   dialog_callback_.Reset();
   BrowserList::RemoveObserver(this);
 }