Oilpan: Remove most WillBe types from the code base

third_party/WebKit/Source/core/layout/LayoutPart.cpp

Index: third_party/WebKit/Source/core/layout/LayoutPart.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutPart.cpp b/third_party/WebKit/Source/core/layout/LayoutPart.cpp
index cc78cc61b30ab035895c1fe11b92a581cd1d0ac0..0361082011f5d3c963980212a9f07c3764792169 100644
--- a/third_party/WebKit/Source/core/layout/LayoutPart.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutPart.cpp
@@ -341,7 +341,7 @@ bool LayoutPart::setWidgetGeometry(const LayoutRect& frame)
         return false;
 
     RefPtr<LayoutPart> protector(this);
-    RefPtrWillBeRawPtr<Node> protectedNode(node());
+    RawPtr<Node> protectedNode(node());
     widget->setFrameRect(newFrame);
     return widget->frameRect().size() != newFrame.size();
 }