Move the test template to //testing/test.gni (part 2)

third_party/mojo/src/mojo/edk/system/BUILD.gn

Index: third_party/mojo/src/mojo/edk/system/BUILD.gn
diff --git a/third_party/mojo/src/mojo/edk/system/BUILD.gn b/third_party/mojo/src/mojo/edk/system/BUILD.gn
index 2f8abdde615119b56010815e19e4d34cd0015d1d..eab85a231d6451b9da2ff7484a83f7f5fee5f97e 100644
--- a/third_party/mojo/src/mojo/edk/system/BUILD.gn
+++ b/third_party/mojo/src/mojo/edk/system/BUILD.gn
@@ -2,13 +2,9 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import("//testing/test.gni")
 import("../mojo_edk.gni")
 
-if (is_android) {
-  import("//build/config/android/config.gni")
-  import("//build/config/android/rules.gni")
-}
-
 config("system_config") {
   defines = [
     # Ensures that dependent projects import the core functions on Windows.
@@ -173,10 +169,6 @@ test("mojo_system_unittests") {
     "//testing/gtest",
   ]
 
-  if (is_android) {
-    deps += [ "//testing/android:native_test_native_code" ]
-  }
-
   allow_circular_includes_from = [ "../embedder:embedder_unittests" ]
 }
 
@@ -198,12 +190,3 @@ test("mojo_message_pipe_perftests") {
     "//testing/gtest",
   ]
 }
-
-if (is_android) {
-  unittest_apk("mojo_system_unittests_apk") {
-    deps = [
-      ":mojo_system_unittests",
-    ]
-    unittests_dep = ":mojo_system_unittests"
-  }
-}