Fixed Linux bots to disable GPU otherwise process is terminated

tools/testing/dart/test_suite.dart

Index: tools/testing/dart/test_suite.dart
diff --git a/tools/testing/dart/test_suite.dart b/tools/testing/dart/test_suite.dart
index 5fe73cc1c0c7b834f375a00f2c4fe8f390ab7b9f..72f5b31de324c7e51bc86ee1f166752fc10284ac 100644
--- a/tools/testing/dart/test_suite.dart
+++ b/tools/testing/dart/test_suite.dart
@@ -1337,7 +1337,12 @@ class StandardTestSuite extends TestSuite {
 
         contentShellOptions.add('--no-timeout');
         contentShellOptions.add('--dump-render-tree');
-
+        // Disable the GPU under Linux and Dartium a termination signal is sent to

[Bill Hesse, 2016/06/13 10:45:21]

Long line.

[Bill Hesse, 2016/06/13 10:45:21]

Not grammatical or understandable - please rewrite.

+        // test that are running after a certain period of time.
+        if (configuration['system'] == 'linux' &&
+            configuration['runtime'] == 'drt') {
+          contentShellOptions.add('--disable-gpu');
+        }
         if (compiler == 'none') {
           dartFlags.add('--ignore-unrecognized-flags');
           if (configuration["checked"]) {