Make component_unittests run the same tests on GYP and GN on Android

components/gcm_driver/BUILD.gn

Index: components/gcm_driver/BUILD.gn
diff --git a/components/gcm_driver/BUILD.gn b/components/gcm_driver/BUILD.gn
index f3d42ee93be0c78bf66307aa0eae6840e6eec5b4..f0780585c4bbd2123d1b299f966334fec2d1c39e 100644
--- a/components/gcm_driver/BUILD.gn
+++ b/components/gcm_driver/BUILD.gn
@@ -123,24 +123,28 @@ static_library("test_support") {
   }
 }
 
-if (!is_android) {
-  source_set("unit_tests") {
-    testonly = true
-    sources = [
+source_set("unit_tests") {
+  testonly = true
+
+  sources = [
+    "gcm_account_tracker_unittest.cc",
+  ]
+
+  deps = [
+    ":gcm_driver",
+    ":test_support",
+    "//testing/gtest",
+    "//third_party/protobuf:protobuf_lite",
+  ]
+
+  if (!is_android) {
+    sources += [
       "gcm_account_mapper_unittest.cc",
-      "gcm_account_tracker_unittest.cc",
       "gcm_channel_status_request_unittest.cc",
       "gcm_client_impl_unittest.cc",
       "gcm_delayed_task_controller_unittest.cc",
       "gcm_driver_desktop_unittest.cc",
       "gcm_stats_recorder_impl_unittest.cc",
     ]
-
-    deps = [
-      ":gcm_driver",
-      ":test_support",
-      "//testing/gtest",
-      "//third_party/protobuf:protobuf_lite",
-    ]
   }
 }