[Android] Fix null-build broken by https://codereview.chromium.org/14322004/

build/android/strip_native_libraries.gypi

 # 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.
 
 # This file is meant to be included into an action to provide a rule that strips
 # native libraries.
 #
 # To use this, create a gyp target with the following form:
 #  {
 #    'actions': [
 #      'variables': {
+#        'intermediate_dir': 'location to place intermediate build artifcats'
 #        'ordered_libraries_file': 'file generated by write_ordered_libraries'
 #        'strip_stamp': 'file to touch when the action is complete'
 #        'stripped_libraries_dir': 'directory to store stripped libraries',
 #      },
 #      'includes': [ '../../build/android/strip_native_libraries.gypi' ],
 #    ],
 #  },
 #
 
 {
   'action_name': 'strip_native_libraries',
   'message': 'Stripping libraries for <(_target_name)',
   'inputs': [
     '<(DEPTH)/build/android/gyp/util/build_utils.py',
     '<(DEPTH)/build/android/gyp/strip_library_for_device.py',
     '<(ordered_libraries_file)'
   ],
+  'variables': {
+    'strip_output_paths': [],
+    'conditions': [
+      ['component == "shared_library"', {
+        # Add a fake output to force the build to always re-run this step.  This
+        # is required because the real inputs are not known at gyp-time and
+        # changing base.so may not trigger changes to dependent libraries.
+        'variables': {
+          'strip_output_paths': [
+            '<(intermediate_dir)/<(strip_stamp).fake',
+          ],
+        },
+      }],
+    ],
+  },
   'outputs': [
     '<(strip_stamp)',
-    # Add a fake output to force the build to always re-run this step. This
-    # is required because the real inputs are not known at gyp-time and
-    # changing base.so may not trigger changes to dependent libraries.
-    '<(strip_stamp).fake',
+    '<@(strip_output_paths)',
   ],
   'action': [
     'python', '<(DEPTH)/build/android/gyp/strip_library_for_device.py',
     '--android-strip=<(android_strip)',
     '--android-strip-arg=--strip-unneeded',
     '--stripped-libraries-dir=<(stripped_libraries_dir)',
     '--libraries-dir=<(SHARED_LIB_DIR)',
     '--libraries-file=<(ordered_libraries_file)',
     '--stamp=<(strip_stamp)',
   ],
 }