Temporarily make unit_tests a static library on Android.

build/common.gypi

 # Copyright (c) 2012 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.
 
 # IMPORTANT:
 # Please don't directly include this file if you are building via gyp_chromium,
 # since gyp_chromium is automatically forcing its inclusion.
 {
   # Variables expected to be overriden on the GYP command line (-D) or by
   # ~/.gyp/include.gypi.
@@ skipping 828 matching lines @@
         'use_libffmpeg%': '0',
 
         # Always use the chromium skia. The use_system_harfbuzz needs to
         # match use_system_skia.
         'use_system_skia%': '0',
         'use_system_harfbuzz%': '0',
 
         # Use the system icu.
         'use_system_icu%': 0,
 
+        # TODO(yfriedman): Remove once unit_tests can link for Android.
+        # To override it specify:
+        # GYP_DEFINES="$GYP_DEFINES android_unit_test_target_type=executable"
+        #     android_gyp
+        'android_unit_test_target_type%': 'static_library',
+
         # Choose static link by build type.
         'conditions': [
           ['android_build_type==0', {
             'static_link_system_icu%': 1,
           }, {
             'static_link_system_icu%': 0,
           }],
         ],
         # Enable to use system sqlite.
         'use_system_sqlite%': '<(android_build_type)',
@@ skipping 2133 matching lines @@
     # settings in target dicts.  SYMROOT is a special case, because many other
     # Xcode variables depend on it, including variables such as
     # PROJECT_DERIVED_FILE_DIR.  When a source group corresponding to something
     # like PROJECT_DERIVED_FILE_DIR is added to a project, in order for the
     # files to appear (when present) in the UI as actual files and not red
     # red "missing file" proxies, the correct path to PROJECT_DERIVED_FILE_DIR,
     # and therefore SYMROOT, needs to be set at the project level.
     'SYMROOT': '<(DEPTH)/xcodebuild',
   },
 }