[oilpan] Rename PauseScope to SafePointScope

Source/core/workers/WorkerRunLoop.cpp

Index: Source/core/workers/WorkerRunLoop.cpp
diff --git a/Source/core/workers/WorkerRunLoop.cpp b/Source/core/workers/WorkerRunLoop.cpp
index 9b7842d01b55de0ae2c17fbbb9858f036269ef70..7f9a85890fd0ec086d2cd385391f3eed267dd11f 100644
--- a/Source/core/workers/WorkerRunLoop.cpp
+++ b/Source/core/workers/WorkerRunLoop.cpp
@@ -161,7 +161,7 @@ MessageQueueWaitResult WorkerRunLoop::runInMode(WorkerContext* context, const Mo
         // FIXME(oilpan): The WorkerContext is kept alive by a persistent handle in WorkerThread.h
         // and therefore there are no unknown heap pointers on the stack at this point.
         // We should probably make that more clear somehow.
-        ThreadState::PauseScope paused(ThreadState::NoHeapPointersOnStack);
+        ThreadState::SafePointScope safePointScope(ThreadState::NoHeapPointersOnStack);
         task = m_messageQueue.waitForMessageFilteredWithTimeout(result, predicate, absoluteTime);
     }