Implement ui/gfx/geometry StructTraits unit tests

ui/gfx/test/run_all_unittests.cc

Index: ui/gfx/test/run_all_unittests.cc
diff --git a/ui/gfx/test/run_all_unittests.cc b/ui/gfx/test/run_all_unittests.cc
index f39c6ac9c86dea80036ebd69a662583f886893c8..65e1f9a8a8438710c196ab39a08382f9fb880c3f 100644
--- a/ui/gfx/test/run_all_unittests.cc
+++ b/ui/gfx/test/run_all_unittests.cc
@@ -28,6 +28,10 @@
 #include "ui/gfx/win/direct_write.h"
 #endif
 
+#if !defined(OS_IOS)
+#include "mojo/edk/embedder/embedder.h"  // nogncheck
+#endif
+
 namespace {
 
 class GfxTestSuite : public base::TestSuite {
@@ -94,6 +98,10 @@ class GfxTestSuite : public base::TestSuite {
 int main(int argc, char** argv) {
   GfxTestSuite test_suite(argc, argv);
 
+#if !defined(OS_IOS)
+  mojo::edk::Init();
+#endif
+
   return base::LaunchUnitTests(
       argc,
       argv,