Accessing navigation information via webcontents

chrome/browser/predictors/resource_prefetch_predictor.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 CHROME_BROWSER_PREDICTORS_RESOURCE_PREFETCH_PREDICTOR_H_
 #define CHROME_BROWSER_PREDICTORS_RESOURCE_PREFETCH_PREDICTOR_H_
 
 #include <stddef.h>
 
 #include <map>
@@ skipping 78 matching lines @@
 
     // Only for responses.
     std::string mime_type;
     bool was_cached;
     GURL redirect_url;  // Empty unless request was redirected to a valid url.
 
     bool has_validators;
     bool always_revalidate;
 
     // Initializes a |URLRequestSummary| from a |URLRequest| response.
-    // Returns true for success.
+    // Returns true for success. Note: Navigation ID has particular

[alexilin, 2016/12/05 13:20:00]

nit: Note: NavigationID is not initialized by this function.

[Benoit L, 2016/12/05 13:25:56]

Thanks for documenting this.

+    // constraints and is NOT initialized by this function. See Observer
+    // private method RetriveNavigationID
     static bool SummarizeResponse(const net::URLRequest& request,
                                   URLRequestSummary* summary);
   };
 
   // Stores the data learned from a single navigation.
   struct PageRequestSummary {
     explicit PageRequestSummary(const GURL& main_frame_url);
     PageRequestSummary(const PageRequestSummary& other);
     ~PageRequestSummary();
 
@@ skipping 265 matching lines @@
 
  private:
   ResourcePrefetchPredictor* predictor_;
 
   DISALLOW_COPY_AND_ASSIGN(TestObserver);
 };
 
 }  // namespace predictors
 
 #endif  // CHROME_BROWSER_PREDICTORS_RESOURCE_PREFETCH_PREDICTOR_H_