Mojo: re-organize public tests

mojo/public/tests/system/core_unittest.cc

Index: mojo/public/tests/system/core_unittest.cc
diff --git a/mojo/public/tests/system_core_unittest.cc b/mojo/public/tests/system/core_unittest.cc
similarity index 98%
rename from mojo/public/tests/system_core_unittest.cc
rename to mojo/public/tests/system/core_unittest.cc
index 5d751b2de7918f9a28c4009ce54dbdb204a0464d..01f677bfb453ecf202cc95ff95bcd77886dc3c9f 100644
--- a/mojo/public/tests/system_core_unittest.cc
+++ b/mojo/public/tests/system/core_unittest.cc
@@ -13,13 +13,13 @@
 namespace mojo {
 namespace {
 
-TEST(SystemTest, GetTimeTicksNow) {
+TEST(CoreTest, GetTimeTicksNow) {
   const MojoTimeTicks start = MojoGetTimeTicksNow();
   EXPECT_NE(static_cast<MojoTimeTicks>(0), start)
       << "MojoGetTimeTicksNow should return nonzero value";
 }
 
-TEST(SystemTest, Basic) {
+TEST(CoreTest, Basic) {
   MojoHandle h_0;
   MojoWaitFlags wf;
   char buffer[10] = { 0 };