VM: Make more globals constant where easily possible.

runtime/bin/dartutils.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 BIN_DARTUTILS_H_
 #define BIN_DARTUTILS_H_
 
 #include "include/dart_api.h"
 #include "include/dart_native_api.h"
 
@@ skipping 198 matching lines @@
   static const uint8_t* SniffForMagicNumber(const uint8_t* text_buffer,
                                             intptr_t* buffer_len,
                                             bool* is_snapshot);
 
   // Write a magic number to indicate a script snapshot file.
   static void WriteMagicNumber(File* file);
 
   // Global state that stores the original working directory..
   static const char* original_working_directory;
 
-  static const char* kDartScheme;
-  static const char* kDartExtensionScheme;
-  static const char* kAsyncLibURL;
-  static const char* kBuiltinLibURL;
-  static const char* kCoreLibURL;
-  static const char* kInternalLibURL;
-  static const char* kIsolateLibURL;
-  static const char* kIOLibURL;
-  static const char* kIOLibPatchURL;
-  static const char* kUriLibURL;
-  static const char* kHttpScheme;
-  static const char* kVMServiceLibURL;
+  static const char* const kDartScheme;
+  static const char* const kDartExtensionScheme;
+  static const char* const kAsyncLibURL;
+  static const char* const kBuiltinLibURL;
+  static const char* const kCoreLibURL;
+  static const char* const kInternalLibURL;
+  static const char* const kIsolateLibURL;
+  static const char* const kIOLibURL;
+  static const char* const kIOLibPatchURL;
+  static const char* const kUriLibURL;
+  static const char* const kHttpScheme;
+  static const char* const kVMServiceLibURL;
 
-  static uint8_t magic_number[];
+  static const uint8_t magic_number[];
 
  private:
   DISALLOW_ALLOCATION();
   DISALLOW_IMPLICIT_CONSTRUCTORS(DartUtils);
 };
 
 
 class CObject {
  public:
   // These match the constants in sdk/lib/io/common.dart.
@@ skipping 343 matching lines @@
 
   ~ScopedBlockingCall() {
     Dart_ThreadEnableProfiling();
   }
 };
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // BIN_DARTUTILS_H_