Upstream: Set build target and evnvironment for Android

build/all_android.gyp

Index: build/all_android.gyp
diff --git a/build/all_android.gyp b/build/all_android.gyp
new file mode 100644
index 0000000000000000000000000000000000000000..3aa4ddd2e2853eacb294dc8161a0a9659365203b
--- /dev/null
+++ b/build/all_android.gyp
@@ -0,0 +1,30 @@
+# Copyright (c) 2011 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 is all.gyp file for Android to prevent breakage in Android and other
+# platform; It will be churning a lot in the short term and eventually be merged
+# into all.gyp.
+#
+# Currently only base_unittests is supported.
+
+{
+  'targets': [
+    {
+      'target_name': 'All',
+      'type': 'none',
+      'dependencies': [
+        'util/build_util.gyp:*',
+      ],
+    }, # target_name: All
+    {
+      # The current list of tests for android.
+      # This is temporary until the full set supported.
+      'target_name': 'android_builder_tests',
+      'type': 'none',
+      'dependencies': [
+        '../base/base.gyp:base_unittests',
+      ],
+    },
+  ],  # targets
+}