Oilpan: Remove most WillBe types from the code base

third_party/WebKit/Source/web/WebFrameImplBase.h

Index: third_party/WebKit/Source/web/WebFrameImplBase.h
diff --git a/third_party/WebKit/Source/web/WebFrameImplBase.h b/third_party/WebKit/Source/web/WebFrameImplBase.h
index 758374699e0b7f4f0e91d1c591b78544cdd74110..2ac187c42a8b75ceafcc67a50b76984ffefdd6c4 100644
--- a/third_party/WebKit/Source/web/WebFrameImplBase.h
+++ b/third_party/WebKit/Source/web/WebFrameImplBase.h
@@ -28,7 +28,7 @@ class FrameOwner;
 // implementation as an instance of the base class, but has no inheritance
 // relationship with it. The cost is a virtual indirection, but this is nicer
 // than the previous manual dispatch emulating real virtual dispatch.
-class WEB_EXPORT WebFrameImplBase : public RefCountedWillBeGarbageCollectedFinalized<WebFrameImplBase> {
+class WEB_EXPORT WebFrameImplBase : public GarbageCollectedFinalized<WebFrameImplBase> {
 public:
     virtual ~WebFrameImplBase();