PlzNavigate: Add a browser test for basic navigations

content/test/content_browser_test_utils_internal.h

 // 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.
 
 #ifndef CONTENT_TEST_CONTENT_BROWSER_TEST_UTILS_INTERNAL_H_
 #define CONTENT_TEST_CONTENT_BROWSER_TEST_UTILS_INTERNAL_H_
 
+#include "content/public/browser/web_contents_observer.h"
+
 // A collections of functions designed for use with content_shell based browser
 // tests internal to the content/ module.
 // Note: If a function here also works with browser_tests, it should be in
 // the content public API.
 
 class GURL;
 
 namespace content {
 
 class FrameTreeNode;
 
+// A helper class for making sure that a navigation succeeded/failed.
+class TestNavigationWebContentsObserver : public WebContentsObserver {
+ public:
+  explicit TestNavigationWebContentsObserver(WebContents* web_contents);

[nasko, 2014/11/24 23:15:00]

I wonder if it is useful to fold this functionality in the existing
TestNavigationObserver class in content/public/test/test_navigation_observer.h.
WDYT?

[clamy, 2014/11/26 12:47:43]

I think it would make sense. Especially as having two classes named
TestNavigationObserver and TestNavigationWebContentsObserver might get
confusing. Done.

+  ~TestNavigationWebContentsObserver();
+
+  void DidStartProvisionalLoadForFrame(RenderFrameHost* render_frame_host,
+                                       const GURL& validated_url,
+                                       bool is_error_page,
+                                       bool is_iframe_srcdoc) override;
+  void DidFailProvisionalLoad(RenderFrameHost* render_frame_host,
+                              const GURL& validated_url,
+                              int error_code,
+                              const base::string16& error_description) override;
+  void DidCommitProvisionalLoadForFrame(
+      RenderFrameHost* render_frame_host,
+      const GURL& url,
+      ui::PageTransition transition_type) override;
+
+  const GURL& navigation_url() const { return navigation_url_; }
+
+  int navigation_succeeded() const { return navigation_succeeded_; }
+
+ private:
+  GURL navigation_url_;
+  bool navigation_succeeded_;
+
+  DISALLOW_COPY_AND_ASSIGN(TestNavigationWebContentsObserver);
+};
+
 // Navigates the frame represented by |node| to |url|, blocking until the
 // navigation finishes.
 void NavigateFrameToURL(FrameTreeNode* node, const GURL& url);
 
 }  // namespace content
 
 #endif  // CONTENT_TEST_CONTENT_BROWSER_TEST_UTILS_INTERNAL_H_