Consolidates accessing and setting the UMA pref to be within metrics code

chrome/browser/ui/views/session_crashed_bubble_view.cc

 // Copyright 2014 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/session_crashed_bubble_view.h"
 
 #include <vector>
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
@@ skipping 400 matching lines @@
 }
 
 void SessionCrashedBubbleView::RestorePreviousSession(views::Button* sender) {
   SessionRestore::RestoreSessionAfterCrash(browser_);
   RecordBubbleHistogramValue(SESSION_CRASHED_BUBBLE_RESTORED);
   restored_ = true;
 
   // Record user's choice for opting in to UMA.
   // There's no opting-out choice in the crash restore bubble.
   if (uma_option_ && uma_option_->checked()) {
-    // TODO: Clean up function ResolveMetricsReportingEnabled so that user pref
-    // is stored automatically.
-    ResolveMetricsReportingEnabled(true);
-    g_browser_process->local_state()->SetBoolean(
-        prefs::kMetricsReportingEnabled, true);
+    base::Callback<void(bool)> callback_fn;
+    InitiateMetricsReportingChange(callback_fn, true);
     RecordBubbleHistogramValue(SESSION_CRASHED_BUBBLE_UMA_OPTIN);
   }
   CloseBubble();
 }
 
 void SessionCrashedBubbleView::CloseBubble() {
   GetWidget()->Close();
 }
 
 bool ShowSessionCrashedBubble(Browser* browser) {
   if (IsBubbleUIEnabled()) {
     SessionCrashedBubbleView::Show(browser);
     return true;
   }
   return false;
 }