Dart2js testing: Add prefix files when running dart2js output on d8 or jsshell.

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 abe30edf891a2f69a6b255c832b1807be4fff949..e132bd5b5256bb2ea66d1c9d5fcff8dc73bb0409 100644
--- a/tools/testing/dart/compiler_configuration.dart
+++ b/tools/testing/dart/compiler_configuration.dart
@@ -16,7 +16,11 @@ import 'test_runner.dart' show
     CompilationCommand;
 
 import 'test_suite.dart' show
-    TestInformation;
+    TestInformation,
+    TestUtils;
+
+import 'utils.dart' show
+    Path;
 
 /// Grouping of a command with its expected result.
 class CommandArtifact {
@@ -124,6 +128,7 @@ abstract class CompilerConfiguration {
 
   List<String> computeRuntimeArguments(
       RuntimeConfiguration runtimeConfiguration,
+      String buildDir,
       TestInformation info,
       List<String> vmOptions,
       List<String> sharedOptions,
@@ -148,6 +153,7 @@ class NoneCompilerConfiguration extends CompilerConfiguration {
 
   List<String> computeRuntimeArguments(
       RuntimeConfiguration runtimeConfiguration,
+      String buildDir,
       TestInformation info,
       List<String> vmOptions,
       List<String> sharedOptions,
@@ -176,7 +182,7 @@ class Dart2xCompilerConfiguration extends CompilerConfiguration {
           isHostChecked: isHostChecked, useSdk: useSdk);
 
   String computeCompilerPath(String buildDir) {
-    var prefix = 'sdk/bin/';
+    var prefix = 'sdk/bin';

[Bill Hesse, 2014/03/05 15:04:41]

This was causing a double /.

     String suffix = executableScriptSuffix;
     if (isHostChecked) {
       // The script dart2js_developer is not included in the
@@ -262,6 +268,21 @@ class Dart2jsCompilerConfiguration extends Dart2xCompilerConfiguration {
         isCsp ? cspOutput : normalOutput,
         'application/javascript');
   }
+
+  List<String> computeRuntimeArguments(
+      RuntimeConfiguration runtimeConfiguration,
+      String buildDir,
+      TestInformation info,
+      List<String> vmOptions,
+      List<String> sharedOptions,
+      List<String> originalArguments,
+      CommandArtifact artifact) {
+    Path sdk = useSdk ? new Path(buildDir).append('dart-sdk/'):
+                        TestUtils.dartDir().append('sdk/');
+    Path preambleDir = sdk.append('lib/_internal/lib/preambles/');
+    return runtimeConfiguration.dart2jsPreambles(preambleDir)
+        ..add(artifact.filename);
+  }
 }
 
 /// Configuration for dart2dart compiler.
@@ -298,6 +319,7 @@ class Dart2dartCompilerConfiguration extends Dart2xCompilerConfiguration {
 
   List<String> computeRuntimeArguments(
       RuntimeConfiguration runtimeConfiguration,
+      String buildDir,
       TestInformation info,
       List<String> vmOptions,
       List<String> sharedOptions,
@@ -352,6 +374,7 @@ class AnalyzerCompilerConfiguration extends CompilerConfiguration {
 
   List<String> computeRuntimeArguments(
       RuntimeConfiguration runtimeConfiguration,
+      String buildDir,
       TestInformation info,
       List<String> vmOptions,
       List<String> sharedOptions,