Remove the DeferredInitializationRunner for MemoryMonitor

ios/chrome/app/main_controller.mm

 // Copyright 2012 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.
 
 #import "ios/chrome/app/main_controller.h"
 
 #include <memory>
 #include <string>
 
 #import <CoreSpotlight/CoreSpotlight.h>
@@ skipping 1148 matching lines @@
                     block:^{
                       _memoryDebuggerManager.reset(
                           [[MemoryDebuggerManager alloc]
                               initWithView:self.window
                                      prefs:GetApplicationContext()
                                                ->GetLocalState()]);
                     }];
   }
 }
 
 - (void)scheduleFreeMemoryMonitoring {

[marq (ping after 24h), 2017/03/16 13:40:58]

Maybe this shouldn't be a schedule.. task and instead should be just be in one
of the main startup methods?

[gambard, 2017/03/17 08:57:46]

Done.

-  // TODO(crbug.com/649338): See if this method cannot call PostBlockingPoolTask
-  // directly instead of enqueueing a block.
-  [[DeferredInitializationRunner sharedInstance]
-      enqueueBlockNamed:kMemoryMonitoring
-                  block:^{
-                    web::WebThread::PostBlockingPoolTask(
-                        FROM_HERE,
-                        base::Bind(
-                            &ios_internal::AsynchronousFreeMemoryMonitor));
-                  }];
+  web::WebThread::PostBlockingPoolTask(
+      FROM_HERE, base::Bind(&ios_internal::AsynchronousFreeMemoryMonitor));
 }
 
 - (void)scheduleLowPriorityStartupTasks {
   [_startupTasks initializeOmaha];
   [_startupTasks registerForApplicationWillResignActiveNotification];
   [self registerForOrientationChangeNotifications];
 
   // Deferred tasks.
   [self schedulePrefObserverInitialization];
   [self scheduleMemoryDebuggingTools];
@@ skipping 1421 matching lines @@
   };
 
   callbackCounter->IncrementCount();
   [self removeBrowsingDataFromBrowserState:_mainBrowserState
                                       mask:removeAllMask
                                 timePeriod:browsing_data::TimePeriod::ALL_TIME
                          completionHandler:decrementCallbackCounterCount];
 }
 
 @end