Code re-factor related to WeakPtrFactory in src/gin module

gin/modules/timer.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 "gin/modules/timer.h"
 
 #include "base/bind.h"
 #include "gin/object_template_builder.h"
 #include "gin/per_context_data.h"
 
@@ skipping 23 matching lines @@
   // be alive when these methods are called.
   return Wrappable<Timer>::GetObjectTemplateBuilder(isolate)
       .SetMethod("cancel",
                  base::Bind(&base::Timer::Stop, base::Unretained(&timer_)))
       .SetMethod("reset",
                  base::Bind(&base::Timer::Reset, base::Unretained(&timer_)));
 }
 
 Timer::Timer(v8::Isolate* isolate, bool repeating, int delay_ms,
              v8::Handle<v8::Function> function)
-    : weak_factory_(this),
-      timer_(false, repeating),
+    : timer_(false, repeating),
       runner_(PerContextData::From(
-          isolate->GetCurrentContext())->runner()->GetWeakPtr()) {
+          isolate->GetCurrentContext())->runner()->GetWeakPtr()),
+      weak_factory_(this) {
   GetWrapper(runner_->GetContextHolder()->isolate())->SetHiddenValue(
       GetHiddenPropertyName(isolate), function);
   timer_.Start(FROM_HERE, base::TimeDelta::FromMilliseconds(delay_ms),
                base::Bind(&Timer::OnTimerFired, weak_factory_.GetWeakPtr()));
 }
 
 Timer::~Timer() {
 }
 
 void Timer::OnTimerFired() {
@@ skipping 36 matching lines @@
 ObjectTemplateBuilder TimerModule::GetObjectTemplateBuilder(
     v8::Isolate* isolate) {
   return Wrappable<TimerModule>::GetObjectTemplateBuilder(isolate)
       .SetMethod("createOneShot",
                  base::Bind(&Timer::Create, Timer::TYPE_ONE_SHOT))
       .SetMethod("createRepeating",
                  base::Bind(&Timer::Create, Timer::TYPE_REPEATING));
 }
 
 }  // namespace gin