Oilpan: Remove most WillBe types from the code base

third_party/WebKit/Source/core/dom/MainThreadTaskRunner.cpp

Index: third_party/WebKit/Source/core/dom/MainThreadTaskRunner.cpp
diff --git a/third_party/WebKit/Source/core/dom/MainThreadTaskRunner.cpp b/third_party/WebKit/Source/core/dom/MainThreadTaskRunner.cpp
index 90d6a7f8c33b8931a6fe410dad89387e40990e42..1713f8bec3494e3743e291c013c6ee5db37effa7 100644
--- a/third_party/WebKit/Source/core/dom/MainThreadTaskRunner.cpp
+++ b/third_party/WebKit/Source/core/dom/MainThreadTaskRunner.cpp
@@ -37,7 +37,7 @@ namespace blink {
 class MainThreadTask : public WebTaskRunner::Task {
     WTF_MAKE_NONCOPYABLE(MainThreadTask); USING_FAST_MALLOC(MainThreadTask);
 public:
-    MainThreadTask(WeakPtrWillBeRawPtr<MainThreadTaskRunner> runner, PassOwnPtr<ExecutionContextTask> task, bool isInspectorTask)
+    MainThreadTask(RawPtr<MainThreadTaskRunner> runner, PassOwnPtr<ExecutionContextTask> task, bool isInspectorTask)
         : m_runner(runner)
         , m_task(task)
         , m_isInspectorTask(isInspectorTask)
@@ -47,7 +47,7 @@ public:
     void run() override;
 
 private:
-    WeakPtrWillBeCrossThreadWeakPersistent<MainThreadTaskRunner> m_runner;
+    CrossThreadWeakPersistent<MainThreadTaskRunner> m_runner;
     OwnPtr<ExecutionContextTask> m_task;
     bool m_isInspectorTask;
 };
@@ -137,7 +137,7 @@ void MainThreadTaskRunner::pendingTasksTimerFired(Timer<MainThreadTaskRunner>*)
     }
 }
 
-WeakPtrWillBeRawPtr<MainThreadTaskRunner> MainThreadTaskRunner::createWeakPointerToSelf()
+RawPtr<MainThreadTaskRunner> MainThreadTaskRunner::createWeakPointerToSelf()
 {
 #if ENABLE(OILPAN)
     return this;