Created separate shards for suspicious testcases.

build/android/pylib/local/device/local_device_gtest_run.py

Index: build/android/pylib/local/device/local_device_gtest_run.py
diff --git a/build/android/pylib/local/device/local_device_gtest_run.py b/build/android/pylib/local/device/local_device_gtest_run.py
index e740f564a23cdb8cb8c52aac216b99421a1d977d..bfb59c6a4b1fbab2ba63421ce4f8545f628bedf4 100644
--- a/build/android/pylib/local/device/local_device_gtest_run.py
+++ b/build/android/pylib/local/device/local_device_gtest_run.py
@@ -282,9 +282,19 @@ class LocalDeviceGtestRun(local_device_test_run.LocalDeviceTestRun):
     return True
 
   #override
-  def _CreateShards(self, tests):
+  def _CreateShards(self, tests, suspects = []):
+    # Suspects are tests that might crash and make the tests in the same shard
+    # following the supect not run. Thus we need to create separate shards for
+    # each suspects, so that other tests can be run.
     device_count = len(self._env.devices)
     shards = []
+
+    # Add shards with only one suspect testcase.
+    shards += [[suspect] for suspect in suspects]
+
+    # Delete suspect testcase from tests.
+    tests = [test for test in tests if not test in suspects]
+
     for i in xrange(0, device_count):
       unbounded_shard = tests[i::device_count]
       shards += [unbounded_shard[j:j+_MAX_SHARD_SIZE]