[Android] Make gyp/apk_install.py resilient to user actions

build/android/gyp/util/md5_check.py

 # Copyright 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import hashlib
 import os
 
 
 def CallAndRecordIfStale(
-    function, record_path=None, input_paths=[], input_strings=[]):
+    function, record_path=None, input_paths=[], input_strings=[], force=False):
   """Calls function if the md5sum of the input paths/strings has changed.
 
   The md5sum of the inputs is compared with the one stored in record_path. If
   this has changed (or the record doesn't exist), function will be called and
   the new md5sum will be recorded.
+
+  If force is True, the function will be called regardless of whether the
+  md5sum is out of date.
   """
   md5_checker = _Md5Checker(
       record_path=record_path,
       input_paths=input_paths,
       input_strings=input_strings)
-  if md5_checker.IsStale():
+  if force or md5_checker.IsStale():
     function()
     md5_checker.Write()
 
 
 def _UpdateMd5ForFile(md5, path, block_size=2**16):
   with open(path, 'rb') as infile:
     while True:
       data = infile.read(block_size)
       if not data:
         break
@@ skipping 32 matching lines @@
     if os.path.exists(self.record_path):
       with open(self.record_path, 'r') as old_record:
         self.old_digest = old_record.read()
 
   def IsStale(self):
     return self.old_digest != self.new_digest
 
   def Write(self):
     with open(self.record_path, 'w') as new_record:
       new_record.write(self.new_digest)