Rename sky::TestObserver to sky::TestHarness

sky/tools/tester/test_harness_impl.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "sky/tools/tester/test_observer_impl.h"
+#include "sky/tools/tester/test_harness_impl.h"
 
 #include "sky/tools/tester/test_runner.h"
 
 namespace sky {
 namespace tester {
 
-TestObserverImpl::TestObserverImpl(TestRunner* test_runner)
+TestHarnessImpl::TestHarnessImpl(TestRunner* test_runner)
     : test_runner_(test_runner->GetWeakPtr()) {
   // FIXME: This is technically when the V8 context gets created and
   // not when the test is started. An error before we instantiated
   // the V8 context would show up before the #BEGIN line for this test.
   test_runner->OnTestStart();
 }
 
-TestObserverImpl::~TestObserverImpl() {
+TestHarnessImpl::~TestHarnessImpl() {
 }
 
-void TestObserverImpl::OnTestComplete(const mojo::String& test_result) {
+void TestHarnessImpl::OnTestComplete(const mojo::String& test_result) {
   if (test_runner_)
     test_runner_->OnTestComplete(test_result);
 }
 
 }  // namespace tester
 }  // namespace sky