[Android] DeviceUtils change to make Install work without md5 binary.

build/android/pylib/device/device_utils.py

Index: build/android/pylib/device/device_utils.py
diff --git a/build/android/pylib/device/device_utils.py b/build/android/pylib/device/device_utils.py
index f7167cea13a20e9401ff03556d1b4e49b8bddfb2..e9a3a8fc24d83cbccdd36c198c6f4fbec3c34e10 100644
--- a/build/android/pylib/device/device_utils.py
+++ b/build/android/pylib/device/device_utils.py
@@ -818,7 +818,13 @@ class DeviceUtils(object):
     if not real_device_path:
       return [(host_path, device_path)]
 
-    host_hash_tuples = md5sum.CalculateHostMd5Sums([real_host_path])
+    try:
+      host_hash_tuples = md5sum.CalculateHostMd5Sums([real_host_path])
+    except EnvironmentError:
+      logging.info('md5sum_bin_host might not be built, '

[perezju, 2015/04/14 10:45:29]

maybe logging.warning, and include the exception message so we know what went
wrong, e.g.

except EnvironmentError as exc:
  logging.warning('md5sum_bin_host error: %s', exc)

[mikecase (-- gone --), 2015/04/14 16:18:38]

Done.

+                   'or we might not be able to find it.')
+      return [(host_path, device_path)]
+
     device_paths_to_md5 = (
         real_device_path if os.path.isfile(real_host_path)
         else ('%s/%s' % (real_device_path, os.path.relpath(p, real_host_path))