Remove CRWNetworkActivityIndicatorManager.

ios/web/net/request_tracker_impl.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 IOS_WEB_NET_REQUEST_TRACKER_IMPL_H_
 #define IOS_WEB_NET_REQUEST_TRACKER_IMPL_H_
 
 #import <Foundation/Foundation.h>
 #include <stdint.h>
 #include <map>
@@ skipping 311 matching lines @@
   void PostBlock(id caller, void (^block)(id), web::WebThread::ID thread);
 
 #pragma mark Other internal methods.
   // Returns the current state of the page.
   PageCounts pageCounts();
 
   // Like description, but cannot be called from any thread. It must be called
   // only from the IO thread.
   NSString* UnsafeDescription();
 
-  // Generates a string unique to this RequestTrackerImpl to use with the
-  // CRWNetworkActivityIndicatorManager.
-  NSString* GetNetworkActivityKey();
-
 #pragma mark Non thread-safe fields, only accessed from the main thread.
   // The RequestTrackerImpl delegate. All changes and access to this object
   // should be done on the main thread.
   id<CRWRequestTrackerDelegate> delegate_;  // Weak.
 
 #pragma mark Non thread-safe fields, only accessed from the IO thread.
   // All the tracked requests for the page, indexed by net::URLRequest (Cast as
   // a void* to avoid the temptation of accessing it from the wrong thread).
   // This map is not exhaustive: it is only meant to estimate the loading
   // progress, and thus requests corresponding to old navigation events are not
@@ skipping 40 matching lines @@
   // Flag to synchronize deletion and callback creation. Lives on the IO thread.
   // True when this tracker has beed Close()d. If this is the case, no further
   // references to it should be generated (for example by binding it into a
   // callback), and the expectation is that it will soon be deleted.
   bool is_closing_;
 };
 
 }  // namespace web
 
 #endif  // IOS_WEB_NET_REQUEST_TRACKER_IMPL_H_