Make header include guards great again

runtime/vm/double_internals.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-#ifndef VM_DOUBLE_INTERNALS_H_
-#define VM_DOUBLE_INTERNALS_H_
+#ifndef RUNTIME_VM_DOUBLE_INTERNALS_H_
+#define RUNTIME_VM_DOUBLE_INTERNALS_H_
 
 #include "platform/utils.h"
 
 namespace dart {
 
 // We assume that doubles and uint64_t have the same endianness.
 static uint64_t double_to_uint64(double d) { return bit_cast<uint64_t>(d); }
 
 // Helper functions for doubles.
 class DoubleInternals {
@@ skipping 53 matching lines @@
   static const uint64_t kHiddenBit = DART_2PART_UINT64_C(0x00100000, 00000000);
   static const int kPhysicalSignificandSize = 52;  // Excludes the hidden bit.
   static const int kExponentBias = 0x3FF + kPhysicalSignificandSize;
   static const int kDenormalExponent = -kExponentBias + 1;
 
   const uint64_t d64_;
 };
 
 }  // namespace dart
 
-#endif  // VM_DOUBLE_INTERNALS_H_
+#endif  // RUNTIME_VM_DOUBLE_INTERNALS_H_