Remove runtime 'dart_app' as it became identical to 'vm'.

tools/testing/dart/compiler_configuration.dart

Index: tools/testing/dart/compiler_configuration.dart
diff --git a/tools/testing/dart/compiler_configuration.dart b/tools/testing/dart/compiler_configuration.dart
index f0f8bc71c13b6bd3284ad13b9bf73a98e507bab4..b777fb7761ea07123118a9add9a49a0f1103f56e 100644
--- a/tools/testing/dart/compiler_configuration.dart
+++ b/tools/testing/dart/compiler_configuration.dart
@@ -79,10 +79,9 @@ abstract class CompilerConfiguration {
             useFastStartup: useFastStartup,
             extraDart2jsOptions:
                 TestUtils.getExtraOptions(configuration, 'dart2js_options'));
-      case 'dart2appjit':
-      case 'dart2app':
+      case 'app_jit':
         return new Dart2AppSnapshotCompilerConfiguration(
-            isDebug: isDebug, isChecked: isChecked, useBlobs: useBlobs);
+            isDebug: isDebug, isChecked: isChecked);
       case 'precompiler':
         return new PrecompilerCompilerConfiguration(
             isDebug: isDebug,
@@ -701,9 +700,8 @@ class PrecompilerCompilerConfiguration extends CompilerConfiguration {
 }
 
 class Dart2AppSnapshotCompilerConfiguration extends CompilerConfiguration {
-  final bool useBlobs;
-  Dart2AppSnapshotCompilerConfiguration({bool isDebug, bool isChecked, bool useBlobs})
-      : super._subclass(isDebug: isDebug, isChecked: isChecked), this.useBlobs = useBlobs;
+  Dart2AppSnapshotCompilerConfiguration({bool isDebug, bool isChecked})
+      : super._subclass(isDebug: isDebug, isChecked: isChecked);
 
   int computeTimeoutMultiplier() {
     int multiplier = 2;
@@ -718,10 +716,11 @@ class Dart2AppSnapshotCompilerConfiguration extends CompilerConfiguration {
       CommandBuilder commandBuilder,
       List arguments,
       Map<String, String> environmentOverrides) {
+    var snapshot = "$tempDir/out.jitsnapshot";
     return new CommandArtifact(<Command>[
       this.computeCompilationCommand(tempDir, buildDir,
           CommandBuilder.instance, arguments, environmentOverrides)
-    ], tempDir, 'application/dart-snapshot');
+    ], snapshot, 'application/dart-snapshot');
   }
 
   CompilationCommand computeCompilationCommand(
@@ -732,15 +731,13 @@ class Dart2AppSnapshotCompilerConfiguration extends CompilerConfiguration {
       Map<String, String> environmentOverrides) {
     var exec = "$buildDir/dart";
     var args = new List();
-    args.add("--snapshot=$tempDir/out.jitsnapshot");
+    var snapshot = "$tempDir/out.jitsnapshot";
+    args.add("--snapshot=$snapshot");
     args.add("--snapshot-kind=app-jit");
-    if (useBlobs) {
-      args.add("--use-blobs");
-    }
     args.addAll(arguments);
 
     return commandBuilder.getCompilationCommand(
-        'dart2snapshot',
+        'app_jit',
         tempDir,
         !useSdk,
         bootstrapDependencies(buildDir),
@@ -775,10 +772,16 @@ class Dart2AppSnapshotCompilerConfiguration extends CompilerConfiguration {
       args.add('--enable_asserts');
       args.add('--enable_type_checks');
     }
-    return args
+    args
       ..addAll(vmOptions)
       ..addAll(sharedOptions)
       ..addAll(originalArguments);
+    for (var i = 0; i < args.length; i++) {
+      if (args[i].endsWith(".dart")) {
+        args[i] = artifact.filename;
+      }
+    }
+    return args;
   }
 }