Remove grab-bag includes of v8.h from several files.

src/arguments.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/arguments.h"
 
-#include "src/arguments.h"
+#include "src/api.h"
 #include "src/vm-state-inl.h"
 
 namespace v8 {
 namespace internal {
 
 
 template <typename T>
 template <typename V>
 v8::Local<V> CustomArguments<T>::GetReturnValue(Isolate* isolate) {
   // Check the ReturnValue.
@@ skipping 78 matching lines @@
 double ClobberDoubleRegisters(double x1, double x2, double x3, double x4) {
   // TODO(ulan): This clobbers only subset of registers depending on compiler,
   // Rewrite this in assembly to really clobber all registers.
   // GCC for ia32 uses the FPU and does not touch XMM registers.
   return x1 * 1.01 + x2 * 2.02 + x3 * 3.03 + x4 * 4.04;
 }
 
 
 }  // namespace internal
 }  // namespace v8