[Blimp] Adds blimp engine browser test framework and LoadUrl test.

blimp/client/feature/mock_navigation_feature_delegate.h

Index: blimp/client/feature/mock_navigation_feature_delegate.h
diff --git a/blimp/client/feature/mock_navigation_feature_delegate.h b/blimp/client/feature/mock_navigation_feature_delegate.h
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+// Copyright 2016 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.
+
+#ifndef BLIMP_CLIENT_FEATURE_MOCK_NAVIGATION_FEATURE_DELEGATE_H_
+#define BLIMP_CLIENT_FEATURE_MOCK_NAVIGATION_FEATURE_DELEGATE_H_
+
+#include <string>
+
+#include "blimp/client/feature/navigation_feature.h"
+#include "testing/gmock/include/gmock/gmock.h"
+
+class GURL;
+class SkBitmap;
+
+namespace blimp {
+namespace client {
+
+class MockNavigationFeatureDelegate
+    : public NavigationFeature::NavigationFeatureDelegate {
+ public:
+  MockNavigationFeatureDelegate();
+  ~MockNavigationFeatureDelegate() override;
+
+  MOCK_METHOD2(OnUrlChanged, void(int tab_id, const GURL& url));
+  MOCK_METHOD2(OnFaviconChanged, void(int tab_id, const SkBitmap& favicon));
+  MOCK_METHOD2(OnTitleChanged, void(int tab_id, const std::string& title));
+  MOCK_METHOD2(OnLoadingChanged, void(int tab_id, bool loading));
+  MOCK_METHOD2(OnPageLoadStatusUpdate, void(int tab_id, bool completed));
+};
+
+}  // namespace client
+}  // namespace blimp
+
+#endif  // BLIMP_CLIENT_FEATURE_MOCK_NAVIGATION_FEATURE_DELEGATE_H_