[oilpan] Rename PauseScope to SafePointScope

Source/Platform/chromium/public/Platform.h

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 76 matching lines @@
 class Platform {
 public:
     // HTML5 Database ------------------------------------------------------
 
 #ifdef WIN32
     typedef HANDLE FileHandle;
 #else
     typedef int FileHandle;
 #endif
 
-    WEBKIT_EXPORT static void markCurrentThreadPaused();
-    WEBKIT_EXPORT static void markCurrentThreadResumed();
+    WEBKIT_EXPORT static void enterSafePoint();
+    WEBKIT_EXPORT static void leaveSafePoint();
     WEBKIT_EXPORT static void attachThread(intptr_t* startOfStack);
     WEBKIT_EXPORT static void detachThread();
 
     WEBKIT_EXPORT static void initialize(Platform*);
     WEBKIT_EXPORT static void shutdown();
     WEBKIT_EXPORT static Platform* current();
 
     // May return null.
     virtual WebCookieJar* cookieJar() { return 0; }
 
@@ skipping 408 matching lines @@
     virtual void didStartWorkerRunLoop(const WebWorkerRunLoop&) { }
     virtual void didStopWorkerRunLoop(const WebWorkerRunLoop&) { }
 
 protected:
     virtual ~Platform() { }
 };
 
 } // namespace WebKit
 
 #endif