Remove unnecessary instrumentation for several jank bugs.

content/browser/renderer_host/pepper/pepper_lookup_request.h

 // Copyright (c) 2012 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_RENDERER_HOST_PEPPER_PEPPER_LOOKUP_REQUEST_H_
 #define CONTENT_BROWSER_RENDERER_HOST_PEPPER_PEPPER_LOOKUP_REQUEST_H_
 
 #include "base/callback.h"
 #include "base/memory/scoped_ptr.h"
-#include "base/profiler/scoped_tracker.h"
 #include "net/base/address_list.h"
 #include "net/base/net_errors.h"
 #include "net/dns/host_resolver.h"
 #include "net/dns/single_request_host_resolver.h"
 
 namespace content {
 
 template <class T>
 class PepperLookupRequest {
  public:
@@ skipping 20 matching lines @@
                           &addresses_,
                           base::Bind(&PepperLookupRequest<T>::OnLookupFinished,
                                      base::Unretained(this)),
                           net::BoundNetLog());
     if (result != net::ERR_IO_PENDING)
       OnLookupFinished(result);
   }
 
  private:
   void OnLookupFinished(int result) {
-    // TODO(vadimt): Remove ScopedTracker below once crbug.com/436634 is fixed.
-    tracked_objects::ScopedTracker tracking_profile(
-        FROM_HERE_WITH_EXPLICIT_FUNCTION(
-            "436634 PepperLookupRequest::OnLookupFinished"));
-
     callback_.Run(result, addresses_, *bound_info_);
     delete this;
   }
 
   net::SingleRequestHostResolver resolver_;
   net::HostResolver::RequestInfo request_info_;
   net::RequestPriority priority_;
   scoped_ptr<T> bound_info_;
   LookupRequestCallback callback_;
 
   net::AddressList addresses_;
 
   DISALLOW_COPY_AND_ASSIGN(PepperLookupRequest);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_PEPPER_PEPPER_LOOKUP_REQUEST_H_