[Android] Add generated runner scripts for browser test suites.

build/apk_browsertest.gypi

 # Copyright 2015 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 a target to provide a rule
 # to build APK-based browser test suites.
 #
 # To use this, create a gyp target with the following form:
 # {
 #   'target_name': 'test_suite_name_apk',
 #   'type': 'none',
 #   'variables': {
 #     'test_suite_name': 'test_suite_name',  # string
 #     'java_in_dir': 'path/to/java/dir',
 #   },
 #   'includes': ['path/to/this/gypi/file'],
 # }
 #
 
 {
   'dependencies': [
     '<(DEPTH)/base/base.gyp:base_java',
     '<(DEPTH)/build/android/pylib/device/commands/commands.gyp:chromium_commands',
     '<(DEPTH)/build/android/pylib/remote/device/dummy/dummy.gyp:remote_device_dummy_apk',
     '<(DEPTH)/testing/android/appurify_support.gyp:appurify_support_java',
     '<(DEPTH)/testing/android/native_test.gyp:native_test_java',
     '<(DEPTH)/tools/android/android_tools.gyp:android_tools',
   ],
   'conditions': [
-     ['OS == "android"', {
-       'variables': {
-         # These are used to configure java_apk.gypi included below.
-         'apk_name': '<(test_suite_name)',
-         'intermediate_dir': '<(PRODUCT_DIR)/<(test_suite_name)_apk',
-         'final_apk_path': '<(intermediate_dir)/<(test_suite_name)-debug.apk',
-         'native_lib_target': 'lib<(test_suite_name)',
-         # TODO(yfriedman, cjhopman): Support managed installs for gtests.
-         'gyp_managed_install': 0,
-       },
-       'includes': [ 'java_apk.gypi' ],
-     }],  # 'OS == "android"
+    ['OS == "android"', {
+      'variables': {
+        # These are used to configure java_apk.gypi included below.
+        'test_type': 'gtest',
+        'apk_name': '<(test_suite_name)',
+        'intermediate_dir': '<(PRODUCT_DIR)/<(test_suite_name)_apk',
+        'final_apk_path': '<(intermediate_dir)/<(test_suite_name)-debug.apk',
+        'native_lib_target': 'lib<(test_suite_name)',
+        # TODO(yfriedman, cjhopman): Support managed installs for gtests.
+        'gyp_managed_install': 0,
+      },
+      'includes': [ 'java_apk.gypi', 'android/test_runner.gypi' ],
+    }],  # 'OS == "android"
   ],  # conditions
 }