Added UMA collection for fullscreen / mouse lock bubble re-shows.

chrome/browser/ui/exclusive_access/mouse_lock_controller.cc

 // Copyright (c) 2015 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/exclusive_access/mouse_lock_controller.h"
 
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/content_settings/host_content_settings_map_factory.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
@@ skipping 98 matching lines @@
       NotifyMouseLockChange();
     } else {
       UnlockMouse();
     }
     SetTabWithExclusiveAccess(nullptr);
     mouse_lock_state_ = MOUSELOCK_NOT_REQUESTED;
     exclusive_access_manager()->UpdateExclusiveAccessExitBubbleContent();
   }
 }
 
+const char* MouseLockController::HistogramPrefix() {
+  return "MouseLock";
+}
+
 bool MouseLockController::HandleUserPressedEscape() {
   if (IsMouseLocked() || IsMouseLockRequested()) {
     ExitExclusiveAccessIfNecessary();
     return true;
   }
 
   return false;
 }
 
 void MouseLockController::ExitExclusiveAccessToPreviousState() {
@@ skipping 52 matching lines @@
     tab->GotResponseToLockMouseRequest(false);
     SetTabWithExclusiveAccess(nullptr);
     NotifyMouseLockChange();
     return true;
   }
 
   return false;
 }
 
 void MouseLockController::LostMouseLock() {
+  Exiting();
   mouse_lock_state_ = MOUSELOCK_NOT_REQUESTED;
   SetTabWithExclusiveAccess(nullptr);
   NotifyMouseLockChange();
   exclusive_access_manager()->UpdateExclusiveAccessExitBubbleContent();
 }
 
 bool MouseLockController::IsMouseLockRequested() const {
   return mouse_lock_state_ == MOUSELOCK_REQUESTED;
 }
 
@@ skipping 49 matching lines @@
     return CONTENT_SETTING_ALLOW;
 
   HostContentSettingsMap* settings_map =
       HostContentSettingsMapFactory::GetForProfile(
           exclusive_access_manager()->context()->GetProfile());
   ContentSetting setting = settings_map->GetContentSetting(
       url, url, CONTENT_SETTINGS_TYPE_MOUSELOCK, std::string());
 
   return setting;
 }