Revert of [Android] Don't use a device blacklist if one isn't provided. (patchset #1 id:1 of https://codereview.chromium.org/1314823011/ )

Reason for revert:
Speculative revert, some builders (Nexus 5, 6 and 9 under chromium.gpu) are failing at the device status check step after this change due to:

  File "build/android/buildbot/bb_device_status_check.py", line 154, in blacklisting_device_status
    if not serial in blacklist.Read():
AttributeError: 'NoneType' object has no attribute 'Read'

See http://build.chromium.org/p/chromium.gpu/builders/Android%20Debug%20%28Nexus%205%29/builds/2067 for example.

Original issue's description:
> [Android] Don't use a device blacklist if one isn't provided.
>
> BUG=517709
>
> Committed: https://crrev.com/be5c91849d2196f97c7a4e0b3e90597c3f2b4c40
> Cr-Commit-Position: refs/heads/master@{#347473}

TBR=rnephew@chromium.org,jbudorick@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=517709

Review URL: https://codereview.chromium.org/1306653005

Cr-Commit-Position: refs/heads/master@{#347489}

12 files changed, 72 insertions, 36 deletions

diff --git a/build/android/adb_install_apk.py b/build/android/adb_install_apk.py
index 4f299ef..e00981f 100755
--- a/build/android/adb_install_apk.py
+++ b/build/android/adb_install_apk.py
@@ -83,9 +83,12 @@ def main():
             and helper.GetSplitName()):
           splits.append(f)
 
-  blacklist = (device_blacklist.Blacklist(args.blacklist_file)
-               if args.blacklist_file
-               else None)
+  if args.blacklist_file:
+    blacklist = device_blacklist.Blacklist(args.blacklist_file)
+  else:
+    # TODO(jbudorick): Remove this once the bots are converted.
+    blacklist = device_blacklist.Blacklist(device_blacklist.BLACKLIST_JSON)
+
   devices = device_utils.DeviceUtils.HealthyDevices(blacklist)
 
   if args.device:
diff --git a/build/android/adb_reverse_forwarder.py b/build/android/adb_reverse_forwarder.py
index d85a8aa..44b1b97 100755
--- a/build/android/adb_reverse_forwarder.py
+++ b/build/android/adb_reverse_forwarder.py
@@ -56,9 +56,11 @@ def main(argv):
     parser.error('Bad port number')
     sys.exit(1)
 
-  blacklist = (device_blacklist.Blacklist(options.blacklist_file)
-               if options.blacklist_file
-               else None)
+  if options.blacklist_file:
+    blacklist = device_blacklist.Blacklist(options.blacklist_file)
+  else:
+    blacklist = None
+
   devices = device_utils.DeviceUtils.HealthyDevices(blacklist)
 
   if options.device:
diff --git a/build/android/buildbot/bb_device_status_check.py b/build/android/buildbot/bb_device_status_check.py
index 9d54fe3..7cd6cd0 100755
--- a/build/android/buildbot/bb_device_status_check.py
+++ b/build/android/buildbot/bb_device_status_check.py
@@ -295,9 +295,11 @@ def main():
 
   run_tests_helper.SetLogLevel(args.verbose)
 
-  blacklist = (device_blacklist.Blacklist(args.blacklist_file)
-               if args.blacklist_file
-               else None)
+  if args.blacklist_file:
+    blacklist = device_blacklist.Blacklist(args.blacklist_file)
+  else:
+    # TODO(jbudorick): Remove this once bots pass the blacklist file.
+    blacklist = device_blacklist.Blacklist(device_blacklist.BLACKLIST_JSON)
 
   last_devices_path = os.path.join(
       args.out_dir, device_list.LAST_DEVICES_FILENAME)
diff --git a/build/android/devil/android/device_blacklist.py b/build/android/devil/android/device_blacklist.py
index 615b3e6..0724654 100644
--- a/build/android/devil/android/device_blacklist.py
+++ b/build/android/devil/android/device_blacklist.py
@@ -3,7 +3,6 @@
 # found in the LICENSE file.
 
 import json
-import logging
 import os
 import threading
 
@@ -50,16 +49,34 @@ class Blacklist(object):
     Args:
       devices: list of bad devices to be added to the blacklist file.
     """
-    logging.info('Adding %s to blacklist %s', ','.join(devices), self._path)
     with self._blacklist_lock:
-      blacklist = self.Read()
+      blacklist = ReadBlacklist()
       blacklist.extend(devices)
-      self.Write(blacklist)
+      WriteBlacklist(blacklist)
 
   def Reset(self):
     """Erases the blacklist file if it exists."""
-    logging.info('Resetting blacklist %s', self._path)
     with self._blacklist_lock:
       if os.path.exists(self._path):
         os.remove(self._path)
 
+
+def ReadBlacklist():
+  # TODO(jbudorick): Phase out once all clients have migrated.
+  return Blacklist(BLACKLIST_JSON).Read()
+
+
+def WriteBlacklist(blacklist):
+  # TODO(jbudorick): Phase out once all clients have migrated.
+  Blacklist(BLACKLIST_JSON).Write(blacklist)
+
+
+def ExtendBlacklist(devices):
+  # TODO(jbudorick): Phase out once all clients have migrated.
+  Blacklist(BLACKLIST_JSON).Extend(devices)
+
+
+def ResetBlacklist():
+  # TODO(jbudorick): Phase out once all clients have migrated.
+  Blacklist(BLACKLIST_JSON).Reset()
+
diff --git a/build/android/devil/android/device_utils.py b/build/android/devil/android/device_utils.py
index 6109341..416009a 100644
--- a/build/android/devil/android/device_utils.py
+++ b/build/android/devil/android/device_utils.py
@@ -1922,7 +1922,11 @@ class DeviceUtils(object):
 
   @classmethod
   def HealthyDevices(cls, blacklist=None, **kwargs):
-    blacklisted_devices = blacklist.Read() if blacklist else []
+    if not blacklist:
+      # TODO(jbudorick): Remove once clients pass in the blacklist.
+      blacklist = device_blacklist.Blacklist(device_blacklist.BLACKLIST_JSON)
+
+    blacklisted_devices = blacklist.Read()
     def blacklisted(adb):
       if adb.GetDeviceSerial() in blacklisted_devices:
         logging.warning('Device %s is blacklisted.', adb.GetDeviceSerial())
diff --git a/build/android/enable_asserts.py b/build/android/enable_asserts.py
index 0616567..1c60277 100755
--- a/build/android/enable_asserts.py
+++ b/build/android/enable_asserts.py
@@ -28,9 +28,10 @@ def main():
 
   args = parser.parse_args()
 
-  blacklist = (device_blacklist.Blacklist(args.blacklist_file)
-               if args.blacklist_file
-               else None)
+  if args.blacklist_file:
+    blacklist = device_blacklist.Blacklist(args.blacklist_file)
+  else:
+    blacklist = None
 
   # TODO(jbudorick): Accept optional serial number and run only for the
   # specified device when present.
diff --git a/build/android/provision_devices.py b/build/android/provision_devices.py
index 1379377..0a7f8fd7 100755
--- a/build/android/provision_devices.py
+++ b/build/android/provision_devices.py
@@ -53,9 +53,11 @@ class _PHASES(object):
 
 
 def ProvisionDevices(args):
-  blacklist = (device_blacklist.Blacklist(args.blacklist_file)
-               if args.blacklist_file
-               else None)
+  if args.blacklist_file:
+    blacklist = device_blacklist.Blacklist(args.blacklist_file)
+  else:
+    # TODO(jbudorick): Remove once the bots have switched over.
+    blacklist = device_blacklist.Blacklist(device_blacklist.BLACKLIST_JSON)
 
   devices = device_utils.DeviceUtils.HealthyDevices(blacklist)
   if args.device:
diff --git a/build/android/pylib/local/device/local_device_environment.py b/build/android/pylib/local/device/local_device_environment.py
index f146f7a..7a20903 100644
--- a/build/android/pylib/local/device/local_device_environment.py
+++ b/build/android/pylib/local/device/local_device_environment.py
@@ -14,9 +14,8 @@ class LocalDeviceEnvironment(environment.Environment):
 
   def __init__(self, args, _error_func):
     super(LocalDeviceEnvironment, self).__init__()
-    self._blacklist = (device_blacklist.Blacklist(args.blacklist_file)
-                       if args.blacklist_file
-                       else None)
+    self._blacklist = device_blacklist.Blacklist(
+        args.blacklist_file or device_blacklist.BLACKLIST_JSON)
     self._device_serial = args.test_device
     self._devices = []
     self._max_tries = 1 + args.num_retries
diff --git a/build/android/screenshot.py b/build/android/screenshot.py
index 902e068..b039796 100755
--- a/build/android/screenshot.py
+++ b/build/android/screenshot.py
@@ -75,9 +75,10 @@ def main():
   if options.verbose:
     logging.getLogger().setLevel(logging.DEBUG)
 
-  blacklist = (device_blacklist.Blacklist(options.blacklist_file)
-               if options.blacklist_file
-               else None)
+  if options.blacklist_file:
+    blacklist = device_blacklist.Blacklist(options.blacklist_file)
+  else:
+    blacklist = None
 
   devices = device_utils.DeviceUtils.HealthyDevices(blacklist)
   if options.device:
diff --git a/build/android/test_runner.py b/build/android/test_runner.py
index 18b87ad..204c81c 100755
--- a/build/android/test_runner.py
+++ b/build/android/test_runner.py
@@ -895,10 +895,13 @@ def _GetAttachedDevices(blacklist_file, test_device):
   Returns:
     A list of attached devices.
   """
-  blacklist = (device_blacklist.Blacklist(blacklist_file)
-               if blacklist_file
-               else None)
+  if not blacklist_file:
+    # TODO(jbudorick): Remove this once bots pass the blacklist file.
+    blacklist_file = device_blacklist.BLACKLIST_JSON
+    logging.warning('Using default device blacklist %s',
+                    device_blacklist.BLACKLIST_JSON)
 
+  blacklist = device_blacklist.Blacklist(blacklist_file)
   attached_devices = device_utils.DeviceUtils.HealthyDevices(blacklist)
   if test_device:
     test_device = [d for d in attached_devices if d == test_device]
diff --git a/build/android/tombstones.py b/build/android/tombstones.py
index f7f5bdc..b1c79d3 100755
--- a/build/android/tombstones.py
+++ b/build/android/tombstones.py
@@ -237,9 +237,10 @@ def main():
                          'crash stacks.')
   options, _ = parser.parse_args()
 
-  blacklist = (device_blacklist.Blacklist(options.blacklist_file)
-               if options.blacklist_file
-               else None)
+  if options.blacklist_file:
+    blacklist = device_blacklist.Blacklist(options.blacklist_file)
+  else:
+    blacklist = None
 
   if options.device:
     devices = [device_utils.DeviceUtils(options.device)]
diff --git a/build/android/update_verification.py b/build/android/update_verification.py
index b25ea49..c73a061 100755
--- a/build/android/update_verification.py
+++ b/build/android/update_verification.py
@@ -90,9 +90,10 @@ def main():
   args = parser.parse_args()
   run_tests_helper.SetLogLevel(args.verbose)
 
-  blacklist = (device_blacklist.Blacklist(args.blacklist_file)
-               if args.blacklist_file
-               else None)
+  if args.blacklist_file:
+    blacklist = device_blacklist.Blacklist(args.blacklist_file)
+  else:
+    blacklist = None
 
   devices = device_utils.DeviceUtils.HealthyDevices(blacklist)
   if not devices: