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

src/diy-fp.cc

 // Copyright 2011 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/diy-fp.h"
+
 #include <stdint.h>
-#include "src/base/logging.h"
-#include "src/diy-fp.h"
-#include "src/globals.h"
 
 namespace v8 {
 namespace internal {
 
 void DiyFp::Multiply(const DiyFp& other) {
   // Simply "emulates" a 128 bit multiplication.
   // However: the resulting number only contains 64 bits. The least
   // significant 64 bits are only used for rounding the most significant 64
   // bits.
   const uint64_t kM32 = 0xFFFFFFFFu;
   uint64_t a = f_ >> 32;
   uint64_t b = f_ & kM32;
   uint64_t c = other.f_ >> 32;
   uint64_t d = other.f_ & kM32;
   uint64_t ac = a * c;
   uint64_t bc = b * c;
   uint64_t ad = a * d;
   uint64_t bd = b * d;
   uint64_t tmp = (bd >> 32) + (ad & kM32) + (bc & kM32);
   // By adding 1U << 31 to tmp we round the final result.
   // Halfway cases will be round up.
   tmp += 1U << 31;
   uint64_t result_f = ac + (ad >> 32) + (bc >> 32) + (tmp >> 32);
   e_ += other.e_ + 64;
   f_ = result_f;
 }
 
 }  // namespace internal
 }  // namespace v8