Cleanups: int -> intptr_t for "array" lengths, memory sizes.

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 423 matching lines @@
 
  private:
   DISALLOW_COPY_AND_ASSIGN(CObjectDouble);
 };
 
 
 class CObjectString : public CObject {
  public:
   DECLARE_COBJECT_CONSTRUCTORS(String)
 
-  int Length() const { return strlen(cobject_->value.as_string); }
+  intptr_t Length() const { return strlen(cobject_->value.as_string); }
   char* CString() const { return cobject_->value.as_string; }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(CObjectString);
 };
 
 
 class CObjectArray : public CObject {
  public:
   DECLARE_COBJECT_CONSTRUCTORS(Array)
@@ skipping 63 matching lines @@
   }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(CObjectExternalUint8Array);
 };
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // BIN_DARTUTILS_H_