Introduce NavigationSimulator to use in unit tests

content/browser/frame_host/navigation_handle_impl.h

 // Copyright 2015 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_BROWSER_FRAME_HOST_NAVIGATION_HANDLE_IMPL_H_
 #define CONTENT_BROWSER_FRAME_HOST_NAVIGATION_HANDLE_IMPL_H_
 
 #include "content/public/browser/navigation_handle.h"
 
 #include <stddef.h>
@@ skipping 76 matching lines @@
       const GURL& url,
       const std::vector<GURL>& redirect_chain,
       FrameTreeNode* frame_tree_node,
       bool is_renderer_initiated,
       bool is_same_page,
       const base::TimeTicks& navigation_start,
       int pending_nav_entry_id,
       bool started_from_context_menu);
   ~NavigationHandleImpl() override;
 
+  // Used to track the state the navigation is currently in.
+  enum State {
+    INITIAL = 0,
+    WILL_SEND_REQUEST,
+    DEFERRING_START,
+    WILL_REDIRECT_REQUEST,
+    DEFERRING_REDIRECT,
+    CANCELING,
+    WILL_PROCESS_RESPONSE,
+    DEFERRING_RESPONSE,
+    READY_TO_COMMIT,
+    DID_COMMIT,
+    DID_COMMIT_ERROR_PAGE,
+  };
+
   // NavigationHandle implementation:
   const GURL& GetURL() override;
   SiteInstance* GetStartingSiteInstance() override;
   bool IsInMainFrame() override;
   bool IsParentMainFrame() override;
   bool IsRendererInitiated() override;
   bool WasServerRedirect() override;
   const std::vector<GURL>& GetRedirectChain() override;
   int GetFrameTreeNodeId() override;
   int GetParentFrameTreeNodeId() override;
@@ skipping 35 matching lines @@
       const std::string& raw_response_header) override;
   void CallDidCommitNavigationForTesting(const GURL& url) override;
   bool WasStartedFromContextMenu() const override;
   const GURL& GetSearchableFormURL() override;
   const std::string& GetSearchableFormEncoding() override;
   ReloadType GetReloadType() override;
   const GlobalRequestID& GetGlobalRequestID() override;
 
   NavigationData* GetNavigationData() override;
 
+  // Used in tests.
+  State state_for_testing() const { return state_; }
+
   // The NavigatorDelegate to notify/query for various navigation events.
   // Normally this is the WebContents, except if this NavigationHandle was
   // created during a navigation to an interstitial page. In this case it will
   // be the InterstitialPage itself.
   //
   // Note: due to the interstitial navigation case, all calls that can possibly
   // expose the NavigationHandle to code outside of content/ MUST go though the
   // NavigatorDelegate. In particular, the ContentBrowserClient should not be
   // called directly form the NavigationHandle code. Thus, these calls will not
   // expose the NavigationHandle when navigating to an InterstialPage.
@@ skipping 160 matching lines @@
   }
 
   void set_response_headers_for_testing(
       scoped_refptr<net::HttpResponseHeaders> response_headers) {
     response_headers_ = response_headers;
   }
 
  private:
   friend class NavigationHandleImplTest;
 
-  // Used to track the state the navigation is currently in.
-  enum State {
-    INITIAL = 0,
-    WILL_SEND_REQUEST,
-    DEFERRING_START,
-    WILL_REDIRECT_REQUEST,
-    DEFERRING_REDIRECT,
-    CANCELING,
-    WILL_PROCESS_RESPONSE,
-    DEFERRING_RESPONSE,
-    READY_TO_COMMIT,
-    DID_COMMIT,
-    DID_COMMIT_ERROR_PAGE,
-  };
-
   NavigationHandleImpl(const GURL& url,
                        const std::vector<GURL>& redirect_chain,
                        FrameTreeNode* frame_tree_node,
                        bool is_renderer_initiated,
                        bool is_same_page,
                        const base::TimeTicks& navigation_start,
                        int pending_nav_entry_id,
                        bool started_from_context_menu);
 
   NavigationThrottle::ThrottleCheckResult CheckWillStartRequest();
@@ skipping 134 matching lines @@
   NavigationType navigation_type_;
 
   base::WeakPtrFactory<NavigationHandleImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(NavigationHandleImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_NAVIGATION_HANDLE_IMPL_H_