Fix timeouts in standalone/io/TestRunnerTest by increasing timeout. Fix a few errors in test_runne…

tests/standalone/src/io/ProcessTestUtil.dart

Index: tests/standalone/src/io/ProcessTestUtil.dart
diff --git a/tests/standalone/src/io/ProcessTestUtil.dart b/tests/standalone/src/io/ProcessTestUtil.dart
index 0f80c3643849dade5b1dbfee7803fd89f4936030..258d89ce6e4c4e1749ede94716fbe824a6d66b82 100644
--- a/tests/standalone/src/io/ProcessTestUtil.dart
+++ b/tests/standalone/src/io/ProcessTestUtil.dart
@@ -18,8 +18,12 @@ String getPlatformExecutableExtension() {
 String getProcessTestFileName() {
   var outDir = getPlatformOutDir();
   var extension = getPlatformExecutableExtension();
+  // We do not expose information about the mode or architecture we are testing
+  // to the tests themselves, so we use any working copy.
   var names = ['${outDir}Release_ia32/process_test$extension',
-               '${outDir}Debug_ia32/process_test$extension'];
+               '${outDir}Debug_ia32/process_test$extension',
+               '${outDir}Release_x64/process_test$extension',
+               '${outDir}Debug_x64/process_test$extension'];
 
   for (var name in names) {
     if (new File(name).existsSync()) {
@@ -32,8 +36,12 @@ String getProcessTestFileName() {
 String getDartFileName() {
   var outDir = getPlatformOutDir();
   var extension = getPlatformExecutableExtension();
+  // We do not expose information about the mode or architecture we are testing
+  // to the tests themselves, so we use any working dart shell.
   var names = ['${outDir}Release_ia32/dart$extension',
-               '${outDir}Debug_ia32/dart$extension'];
+               '${outDir}Debug_ia32/dart$extension',
+               '${outDir}Release_x64/dart$extension',
+               '${outDir}Debug_x64/dart$extension'];
 
   for (var name in names) {
     if (new File(name).existsSync()) {