Return a null Platform.executable and resolvedExecutable on Android

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.
 
 #if !defined(DART_IO_DISABLED)
 
 #include "bin/platform.h"
 
 #include "bin/file.h"
 #include "bin/utils.h"
@@ skipping 22 matching lines @@
   char hostname[HOSTNAME_LENGTH];
   if (Platform::LocalHostname(hostname, HOSTNAME_LENGTH)) {
     Dart_SetReturnValue(args, DartUtils::NewString(hostname));
   } else {
     Dart_SetReturnValue(args, DartUtils::NewDartOSError());
   }
 }
 
 
 void FUNCTION_NAME(Platform_ExecutableName)(Dart_NativeArguments args) {
-  ASSERT(Platform::GetExecutableName() != NULL);
   if (Dart_IsRunningPrecompiledCode()) {
     // This is a work-around to be able to use most of the existing test suite
     // for precompilation. Many tests do something like Process.run(
     // Platform.executable, some_other_script.dart). But with precompilation
     // the script is already fixed, so the spawned process runs the same script
     // again and we have a fork-bomb.
     Dart_ThrowException(Dart_NewStringFromCString(
         "Platform.executable not supported under precompilation"));
     UNREACHABLE();
   }
-  Dart_SetReturnValue(
-      args, Dart_NewStringFromCString(Platform::GetExecutableName()));
+  if (Platform::GetExecutableName() != NULL) {
+    Dart_SetReturnValue(
+        args, Dart_NewStringFromCString(Platform::GetExecutableName()));
+  } else {
+    Dart_SetReturnValue(args, Dart_Null());
+  }
 }
 
 
 void FUNCTION_NAME(Platform_ResolvedExecutableName)(Dart_NativeArguments args) {
   if (Dart_IsRunningPrecompiledCode()) {
     Dart_ThrowException(Dart_NewStringFromCString(
         "Platform.resolvedExecutable not supported under precompilation"));
     UNREACHABLE();
   }
 
@@ skipping 50 matching lines @@
 
 
 void FUNCTION_NAME(Platform_GetVersion)(Dart_NativeArguments args) {
   Dart_SetReturnValue(args, Dart_NewStringFromCString(Dart_VersionString()));
 }
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // !defined(DART_IO_DISABLED)