EDK: Remove (direct) dependencies of //mojo/edk/system on //base/test.

mojo/edk/system/test/run_all_unittests.cc

Index: mojo/edk/system/test/run_all_unittests.cc
diff --git a/mojo/edk/system/run_all_unittests.cc b/mojo/edk/system/test/run_all_unittests.cc
similarity index 91%
rename from mojo/edk/system/run_all_unittests.cc
rename to mojo/edk/system/test/run_all_unittests.cc
index cd6133741bbc3e2a12817fded892a29ee382f92b..8dbf13d3b58758a8ba0019b15f370a8d1860b689 100644
--- a/mojo/edk/system/run_all_unittests.cc
+++ b/mojo/edk/system/test/run_all_unittests.cc
@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
+// This defines the main() for EDK internal implementation unit test binaries.
+
 #include "base/bind.h"
 #include "base/test/launcher/unit_test_launcher.h"
 #include "base/test/test_suite.h"