Use devil's adb with each bisect iteration, also start/stop daemons.

scripts/slave/recipes/bisection/android_bisect_staging.py

Index: scripts/slave/recipes/bisection/android_bisect_staging.py
diff --git a/scripts/slave/recipes/bisection/android_bisect_staging.py b/scripts/slave/recipes/bisection/android_bisect_staging.py
index 43f669ae4de16b9b9b2b0e2478d6079fed2a9752..a9e8a3f00cbd889e196c13f8600814473c3d28ce 100644
--- a/scripts/slave/recipes/bisection/android_bisect_staging.py
+++ b/scripts/slave/recipes/bisection/android_bisect_staging.py
@@ -2,6 +2,8 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import contextlib
+
 from recipe_engine.types import freeze
 
 DEPS = [
@@ -127,6 +129,35 @@ def RunSteps(api, mastername, buildername):
 
   api.chromium_android.use_devil_adb()
 
+  @contextlib.contextmanager
+  def android_bisect_build_wrapper(new_api):
+    """A context manager for use as auto_bisect's build_context_mgr.
+
+    This wraps each individual bisect test. We use new_api here to
+    disambiguate from RunSteps' api object. Otherwise calling
+    auto_bisect_staging from within auto_bisect_staging causes a module
+    to require itself.
+    """
+    with api.chromium_android.android_build_wrapper()(new_api):
+      try:
+        yield
+      finally:
+        api.auto_bisect_staging.ensure_checkout()
+
+  @contextlib.contextmanager
+  def android_bisect_test_wrapper(api):

[jbudorick, 2016/11/11 01:15:55]

You have api here and new_api above. I'm guessing you're doing the latter to not
shadow api in the outer scope. Should you do the same here?

[ghost stip (do not use), 2016/11/11 02:19:18]

sure, why not

+    """A context manager for use as auto_bisect's test_context_mgr.
+
+    This wraps each individual bisect test.
+    """
+    api.chromium_android.use_devil_adb()
+    with api.chromium_android.android_test_wrapper()(api):
+      yield
+
+  # Make sure the bisect build and individual test runs are wrapped.
+  api.auto_bisect_staging.build_context_mgr = android_bisect_build_wrapper
+  api.auto_bisect_staging.test_context_mgr = android_bisect_test_wrapper
+
   api.auto_bisect_staging.start_try_job(api, update_step=update_step,
                                         bot_db=bot_db,
                                         do_not_nest_wait_for_revision=True)