Convert RenderBlockFlow code to use FloatingObject references

Source/wtf/OwnPtr.h

Index: Source/wtf/OwnPtr.h
diff --git a/Source/wtf/OwnPtr.h b/Source/wtf/OwnPtr.h
index 43914c18eb479d1435db4bf3f516b969ea0295f0..1f687a975730f1a1f5da239719359900af9857ac 100644
--- a/Source/wtf/OwnPtr.h
+++ b/Source/wtf/OwnPtr.h
@@ -56,6 +56,7 @@ namespace WTF {
         }
 
         PtrType get() const { return m_ptr; }
+        ValueType& getReference() const { ASSERT(m_ptr); return *m_ptr; };

[Julien - ping for review, 2015/03/16 15:27:54]

Note that this is basically operator* so it seems like using it in the callers
above would solve our problem without the need for a new function.

[Sunil Ratnu, 2015/03/17 11:31:19]

Done. Now using operator* itself instead of the new function.

 
         void clear();
         PassOwnPtr<T> release();