Retry: Add a first test for tools/deep_memory_profiler.

tools/deep_memory_profiler/PRESUBMIT.py

Index: tools/deep_memory_profiler/PRESUBMIT.py
diff --git a/tools/deep_memory_profiler/PRESUBMIT.py b/tools/deep_memory_profiler/PRESUBMIT.py
index 88595b5d6affed3d60f99fec6e85107f75117dc1..965fad9beda64d2c7eac6f75bd1d6f9330e45f49 100644
--- a/tools/deep_memory_profiler/PRESUBMIT.py
+++ b/tools/deep_memory_profiler/PRESUBMIT.py
@@ -10,8 +10,30 @@ details on the presubmit API built into gcl.
 
 
 def CommonChecks(input_api, output_api):
+  import sys
+  def join(*args):
+    return input_api.os_path.join(input_api.PresubmitLocalPath(), *args)
+
   output = []
-  output.extend(input_api.canned_checks.RunPylint(input_api, output_api))
+  sys_path_backup = sys.path
+  try:
+    sys.path = [
+      join('..', 'find_runtime_symbols'),
+    ] + sys.path
+    output.extend(input_api.canned_checks.RunPylint(input_api, output_api))
+  finally:
+    sys.path = sys_path_backup
+
+  output.extend(
+      input_api.canned_checks.RunUnitTestsInDirectory(
+          input_api, output_api,
+          input_api.os_path.join(input_api.PresubmitLocalPath(), 'tests'),
+          whitelist=[r'.+_test\.py$']))
+
+  if input_api.is_committing:
+    output.extend(input_api.canned_checks.PanProjectChecks(input_api,
+                                                           output_api,
+                                                           owners_check=False))
   return output