Rename TARGET_OS_* to HOST_OS_*.

runtime/bin/dartutils.cc

 // 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.
 
 #include "bin/dartutils.h"
 
 #include "bin/crypto.h"
 #include "bin/directory.h"
 #include "bin/extensions.h"
 #include "bin/file.h"
@@ skipping 76 matching lines @@
         is_kernel_file = true;
         *kernel_file = buffer;
       }
     }
   }
   return is_kernel_file;
 }
 
 
 static bool IsWindowsHost() {
-#if defined(TARGET_OS_WINDOWS)
+#if defined(HOST_OS_WINDOWS)
   return true;
-#else   // defined(TARGET_OS_WINDOWS)
+#else   // defined(HOST_OS_WINDOWS)
   return false;
-#endif  // defined(TARGET_OS_WINDOWS)
+#endif  // defined(HOST_OS_WINDOWS)
 }
 
 
 const char* DartUtils::MapLibraryUrl(const char* url_string) {
   ASSERT(url_mapping != NULL);
   // We need to check if the passed in url is found in the url_mapping array,
   // in that case use the mapped entry.
   intptr_t len = strlen(url_string);
   for (intptr_t idx = 0; idx < url_mapping->count(); idx++) {
     const char* url_name = url_mapping->GetArgument(idx);
@@ skipping 1070 matching lines @@
       new CObjectString(CObject::NewString(os_error->message()));
   CObjectArray* result = new CObjectArray(CObject::NewArray(3));
   result->SetAt(0, new CObjectInt32(CObject::NewInt32(kOSError)));
   result->SetAt(1, new CObjectInt32(CObject::NewInt32(os_error->code())));
   result->SetAt(2, error_message);
   return result;
 }
 
 }  // namespace bin
 }  // namespace dart