Revert change to Platform.excutable and add Platform.resolvedExecutable

runtime/bin/platform.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/platform.h"
 
 #include "include/dart_api.h"
 
 #include "bin/file.h"
 #include "bin/utils.h"
 
 namespace dart {
 namespace bin {
 
 const char* Platform::executable_name_ = NULL;
-bool Platform::executable_name_resolved_ = false;
+const char* Platform::resolved_executable_name_ = NULL;
 const char* Platform::package_root_ = NULL;
 int Platform::script_index_ = 1;
 char** Platform::argv_ = NULL;
 
 void FUNCTION_NAME(Platform_NumberOfProcessors)(Dart_NativeArguments args) {
   Dart_SetReturnValue(args, Dart_NewInteger(Platform::NumberOfProcessors()));
 }
 
 
 void FUNCTION_NAME(Platform_OperatingSystem)(Dart_NativeArguments args) {
@@ skipping 17 matching lines @@
 }
 
 
 void FUNCTION_NAME(Platform_ExecutableName)(Dart_NativeArguments args) {
   ASSERT(Platform::GetExecutableName() != NULL);
   Dart_SetReturnValue(
       args, Dart_NewStringFromCString(Platform::GetExecutableName()));
 }
 
 
+void FUNCTION_NAME(Platform_ResolvedExecutableName)(Dart_NativeArguments args) {
+  if (Platform::GetResolvedExecutableName() != NULL) {
+    Dart_SetReturnValue(
+        args, Dart_NewStringFromCString(Platform::GetResolvedExecutableName()));
+  } else {
+    Dart_SetReturnValue(args, Dart_Null());
+  }
+}
+
+
 void FUNCTION_NAME(Platform_ExecutableArguments)(Dart_NativeArguments args) {
   int end = Platform::GetScriptIndex();
   char** argv = Platform::GetArgv();
   Dart_Handle result = Dart_NewList(end - 1);
   for (intptr_t i = 1; i < end; i++) {
     Dart_Handle str = DartUtils::NewString(argv[i]);
     Dart_Handle error = Dart_ListSetAt(result, i - 1, str);
     if (Dart_IsError(error)) {
       Dart_PropagateError(error);
     }
@@ skipping 42 matching lines @@
   }
 }
 
 
 void FUNCTION_NAME(Platform_GetVersion)(Dart_NativeArguments args) {
   Dart_SetReturnValue(args, Dart_NewStringFromCString(Dart_VersionString()));
 }
 
 }  // namespace bin
 }  // namespace dart