Convert ContentFaviconDriver to use the new navigation callbacks.

content/public/browser/navigation_handle.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_PUBLIC_BROWSER_NAVIGATION_HANDLE_H_
 #define CONTENT_PUBLIC_BROWSER_NAVIGATION_HANDLE_H_
 
 #include <memory>
 #include <string>
 
 #include "content/common/content_export.h"
 #include "content/public/browser/navigation_throttle.h"
+#include "content/public/browser/reload_type.h"
 #include "content/public/common/referrer.h"
 #include "net/base/net_errors.h"
 #include "net/http/http_response_info.h"
 #include "ui/base/page_transition_types.h"
 
 class GURL;
 
 namespace net {
 class HttpResponseHeaders;
 }  // namespace net
@@ skipping 68 matching lines @@
   virtual const base::TimeTicks& NavigationStart() = 0;
 
   // Whether or not the navigation was started within a context menu.
   virtual bool WasStartedFromContextMenu() const = 0;
 
   // Returns the URL and encoding of an INPUT field that corresponds to a
   // searchable form request.
   virtual const GURL& GetSearchableFormURL() = 0;
   virtual const std::string& GetSearchableFormEncoding() = 0;
 
+  virtual ReloadType GetReloadType() = 0;

[Charlie Reis, 2017/01/23 18:30:08]

Let's add a comment mentioning this is only present for browser-initiated
navigations (e.g., not location.reload()) if we keep this.

+
   // Parameters available at network request start time ------------------------
   //
   // The following parameters are only available when the network request is
   // made for the navigation (or at commit time if no network request is made).
   // This corresponds to NavigationThrottle::WillSendRequest. They should not
   // be queried before that.
 
   // Whether the navigation is done using HTTP POST method. This may change
   // during the navigation (e.g. after encountering a server redirect).
   //
@@ skipping 134 matching lines @@
 
   // The NavigationData that the embedder returned from
   // ResourceDispatcherHostDelegate::GetNavigationData during commit. This will
   // be a clone of the NavigationData.
   virtual NavigationData* GetNavigationData() = 0;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_NAVIGATION_HANDLE_H_