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

src/strtod.cc

 // Copyright 2012 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/strtod.h"
+
 #include <stdarg.h>
 #include <cmath>
 
-#include "src/v8.h"
-
 #include "src/bignum.h"
 #include "src/cached-powers.h"
 #include "src/double.h"
 #include "src/globals.h"
-#include "src/strtod.h"
 #include "src/utils.h"
 
 namespace v8 {
 namespace internal {
 
 // 2^53 = 9007199254740992.
 // Any integer with at most 15 decimal digits will hence fit into a double
 // (which has a 53bit significand) without loss of precision.
 static const int kMaxExactDoubleIntegerDecimalDigits = 15;
 // 2^64 = 18446744073709551616 > 10^19
@@ skipping 389 matching lines @@
   double guess;
   if (DoubleStrtod(trimmed, exponent, &guess) ||
       DiyFpStrtod(trimmed, exponent, &guess)) {
     return guess;
   }
   return BignumStrtod(trimmed, exponent, guess);
 }
 
 }  // namespace internal
 }  // namespace v8