[Android] Add gyp support for multidex.

base/base.gyp

 # 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'includes': [
     '../build/win_precompile.gypi',
@@ skipping 1425 matching lines @@
           'variables': {
             'java_in_dir': '../base/android/java',
             'jar_excluded_classes': [ '*/NativeLibraries.class' ],
           },
           'dependencies': [
             'base_java_application_state',
             'base_java_library_load_from_apk_status_codes',
             'base_java_library_process_type',
             'base_java_memory_pressure_level',
             'base_native_libraries_gen',
+            '../third_party/android_tools/android_tools.gyp:android_support_multidex_javalib',
             '../third_party/jsr-305/jsr-305.gyp:jsr_305_javalib',
           ],
           'includes': [ '../build/java.gypi' ],
         },
         {
           # GN: //base:base_java_unittest_support
           'target_name': 'base_java_unittest_support',
           'type': 'none',
           'dependencies': [
             'base_java',
@@ skipping 37 matching lines @@
           'dependencies': [
             'base_java',
             '../testing/android/on_device_instrumentation.gyp:reporter_java',
           ],
           'variables': {
             'java_in_dir': '../base/test/android/javatests',
           },
           'includes': [ '../build/java.gypi' ],
         },
         {
+          # TODO(jbudorick): Remove this once we roll to robolectric 3.0 and pull
+          # in the multidex shadow library. crbug.com/522043
+          # GN: //base:base_junit_test_support
+          'target_name': 'base_junit_test_support',
+          'type': 'none',
+          'dependencies': [
+            '../testing/android/junit/junit_test.gyp:junit_test_support',
+            '../third_party/android_tools/android_tools.gyp:android_support_multidex_javalib',
+          ],
+          'variables': {
+            'src_paths': [
+              '../base/test/android/junit/',
+            ],
+          },
+          'includes': [ '../build/host_jar.gypi' ]
+        },
+        {
           # GN: //base:base_junit_tests
           'target_name': 'base_junit_tests',
           'type': 'none',
           'dependencies': [
             'base_java',
             'base_java_test_support',
+            'base_junit_test_support',
             '../testing/android/junit/junit_test.gyp:junit_test_support',
           ],
           'variables': {
              'main_class': 'org.chromium.testing.local.JunitTestMain',
              'src_paths': [
                '../base/android/junit/',
              ],
            },
           'includes': [ '../build/host_jar.gypi' ],
         },
@@ skipping 106 matching lines @@
             '../build/isolate.gypi',
           ],
           'sources': [
             'base_unittests.isolate',
           ],
         },
       ],
     }],
   ],
 }