Enable some profile_chrome unit tests on Trybots

systrace/profile_chrome/util.py

Index: systrace/profile_chrome/util.py
diff --git a/systrace/profile_chrome/util.py b/systrace/profile_chrome/util.py
index f5cb5bf370aa97c4eb59b71b32109f9db0cc6004..0fdeddf3d8bf24b0dfc8bc230622437fee8ca64f 100644
--- a/systrace/profile_chrome/util.py
+++ b/systrace/profile_chrome/util.py
@@ -7,6 +7,9 @@ import os
 import time
 import zipfile
 
+from devil.android.sdk import intent
+from devil.android.sdk import keyevent
+
 
 def ArchiveFiles(host_files, output):
   with zipfile.ZipFile(output, 'w', zipfile.ZIP_DEFLATED) as z:
@@ -33,3 +36,25 @@ def WriteDataToCompressedFile(data, output):
 
 def GetTraceTimestamp():
   return time.strftime('%Y-%m-%d-%H%M%S', time.localtime())
+
+def StartBrowser(device, package_info):

[Sami, 2016/09/09 10:28:25]

Feels like this fits in better in the test harness. Except for the startup test,
I don't think we'd need to start the browser automatically in any other case.

[washingtonp, 2016/09/09 18:07:29]

Done.

+  # Turn on the device screen.
+  device.SetScreen(True)
+
+  # Unlock device.
+  device.SendKeyEvent(keyevent.KEYCODE_MENU)
+
+  # Start browser.
+  device.StartActivity(
+    intent.Intent(activity=package_info.activity,
+                  package=package_info.package,
+                  data='about:blank',
+                  extras={'create_new_tab': True}),
+    blocking=True, force_stop=True)
+
+def GetChromeProcessID(device, package_info):
+  chrome_processes = device.GetPids(package_info.package)
+  if (package_info.package in chrome_processes and
+      len(chrome_processes[package_info.package]) > 0):
+    return chrome_processes[package_info.package][0]
+  return None