Replace our home-grown BitCast with bit_cast from Chrome/Google3.

src/deoptimizer.cc

 // Copyright 2013 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 #include "src/accessors.h"
 #include "src/codegen.h"
 #include "src/deoptimizer.h"
 #include "src/disasm.h"
@@ skipping 3657 matching lines @@
 }
 
 
 DeoptimizedFrameInfo::~DeoptimizedFrameInfo() {
   delete[] expression_stack_;
   delete[] parameters_;
 }
 
 
 void DeoptimizedFrameInfo::Iterate(ObjectVisitor* v) {
-  v->VisitPointer(BitCast<Object**>(&function_));
+  v->VisitPointer(bit_cast<Object**>(&function_));
   v->VisitPointer(&context_);
   v->VisitPointers(parameters_, parameters_ + parameters_count_);
   v->VisitPointers(expression_stack_, expression_stack_ + expression_count_);
 }
 
 } }  // namespace v8::internal