Eliminate third_party/mojo/src from all targets' include paths

third_party/mojo/src/mojo/public/cpp/system/tests/core_unittest.cc

Index: third_party/mojo/src/mojo/public/cpp/system/tests/core_unittest.cc
diff --git a/third_party/mojo/src/mojo/public/cpp/system/tests/core_unittest.cc b/third_party/mojo/src/mojo/public/cpp/system/tests/core_unittest.cc
index 4dcad4332bd7e91fb1a249f4f06b7b4dfd0796bd..63bfb05df553d4c9022ae6bce2681360246b09aa 100644
--- a/third_party/mojo/src/mojo/public/cpp/system/tests/core_unittest.cc
+++ b/third_party/mojo/src/mojo/public/cpp/system/tests/core_unittest.cc
@@ -6,14 +6,14 @@
 // TODO(vtl): Maybe rename "CoreCppTest" -> "CoreTest" if/when this gets
 // compiled into a different binary from the C API tests.
 
-#include "mojo/public/cpp/system/core.h"
+#include "third_party/mojo/src/mojo/public/cpp/system/core.h"
 
 #include <stddef.h>
 
 #include <map>
 
-#include "mojo/public/cpp/system/macros.h"
 #include "testing/gtest/include/gtest/gtest.h"
+#include "third_party/mojo/src/mojo/public/cpp/system/macros.h"
 
 namespace mojo {
 namespace {