Rename sky::TestObserver to sky::TestHarness

sky/tools/tester/test_runner.cc

Index: sky/tools/tester/test_runner.cc
diff --git a/sky/tools/tester/test_runner.cc b/sky/tools/tester/test_runner.cc
index 282531bb7b676d12e0b3a91c3787be6b15f30014..f23349e81bd8c88f34e2badf12504fd3582dc505 100644
--- a/sky/tools/tester/test_runner.cc
+++ b/sky/tools/tester/test_runner.cc
@@ -15,14 +15,14 @@ namespace tester {
 
 TestRunner::TestRunner(TestRunnerClient* client, mojo::View* container,
     const std::string& url)
-    : test_observer_factory_(this),
+    : test_harness_factory_(this),
       client_(client),
       weak_ptr_factory_(this) {
   CHECK(client);
 
   scoped_ptr<mojo::ServiceProviderImpl> exported_services(
     new mojo::ServiceProviderImpl());
-  exported_services->AddService(&test_observer_factory_);
+  exported_services->AddService(&test_harness_factory_);
 
   container->Embed(url, exported_services.Pass());
 }