Add the navigation redirect-chain to Sync sessions proto for offline analysis.

content/browser/frame_host/navigation_controller_impl.h

 // Copyright 2013 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_CONTROLLER_IMPL_H_
 #define CONTENT_BROWSER_FRAME_HOST_NAVIGATION_CONTROLLER_IMPL_H_
 
 #include "base/callback.h"
 #include "base/compiler_specific.h"
 #include "base/gtest_prod_util.h"
@@ skipping 196 matching lines @@
   void SetScreenshotManager(NavigationEntryScreenshotManager* manager);
 
   // Discards only the pending entry.
   void DiscardPendingEntry();
 
  private:
   friend class RestoreHelper;
 
   FRIEND_TEST_ALL_PREFIXES(NavigationControllerTest,
                            PurgeScreenshot);
+  FRIEND_TEST_ALL_PREFIXES(NavigationControllerTest,
+                           GetMergedRedirectChainNewPage);
+  FRIEND_TEST_ALL_PREFIXES(NavigationControllerTest,
+                           GetMergedRedirectChainSamePage);
+  FRIEND_TEST_ALL_PREFIXES(NavigationControllerTest,
+                           GetMergedRedirectChainMergeNoOverlap);
+  FRIEND_TEST_ALL_PREFIXES(NavigationControllerTest,
+                           GetMergedRedirectChainMergeOneOverlap);
+  FRIEND_TEST_ALL_PREFIXES(NavigationControllerTest,
+                           GetMergedRedirectChainMergeTwoOverlap);
   FRIEND_TEST_ALL_PREFIXES(TimeSmoother, Basic);
   FRIEND_TEST_ALL_PREFIXES(TimeSmoother, SingleDuplicate);
   FRIEND_TEST_ALL_PREFIXES(TimeSmoother, ManyDuplicates);
   FRIEND_TEST_ALL_PREFIXES(TimeSmoother, ClockBackwardsJump);
 
   // Helper class to smooth out runs of duplicate timestamps while still
   // allowing time to jump backwards.
   class CONTENT_EXPORT TimeSmoother {
    public:
     // Returns |t| with possibly some time added on.
@@ skipping 102 matching lines @@
   // Inserts up to |max_index| entries from |source| into this. This does NOT
   // adjust any of the members that reference entries_
   // (last_committed_entry_index_, pending_entry_index_ or
   // transient_entry_index_).
   void InsertEntriesFrom(const NavigationControllerImpl& source, int max_index);
 
   // Returns the navigation index that differs from the current entry by the
   // specified |offset|.  The index returned is not guaranteed to be valid.
   int GetIndexForOffset(int offset) const;
 
+  // Produces a redirect chain by merging the active entry redirects with the
+  // redirects given in the params, taking into account the type of navigation
+  // specified in the params.
+  std::vector<GURL> GetMergedRedirectChain(
+      const FrameHostMsg_DidCommitProvisionalLoad_Params& params,
+      const std::vector<GURL>& active_entry_redirects) const;
+
   // ---------------------------------------------------------------------------
 
   // The user browser context associated with this controller.
   BrowserContext* browser_context_;
 
   // List of NavigationEntry for this tab
   typedef std::vector<linked_ptr<NavigationEntryImpl> > NavigationEntries;
   NavigationEntries entries_;
 
   // An entry we haven't gotten a response for yet.  This will be discarded
@@ skipping 65 matching lines @@
   TimeSmoother time_smoother_;
 
   scoped_ptr<NavigationEntryScreenshotManager> screenshot_manager_;
 
   DISALLOW_COPY_AND_ASSIGN(NavigationControllerImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_NAVIGATION_CONTROLLER_IMPL_H_