Remove unnecessary instrumentation for several jank bugs.

net/http/partial_data.cc

 // 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.
 
 #include "net/http/partial_data.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/format_macros.h"
 #include "base/logging.h"
-#include "base/profiler/scoped_tracker.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "net/base/net_errors.h"
 #include "net/disk_cache/disk_cache.h"
 #include "net/http/http_response_headers.h"
 #include "net/http/http_util.h"
 
 namespace net {
 
@@ skipping 61 matching lines @@
                                        base::Unretained(this)));
   if (rv != net::ERR_IO_PENDING) {
     // The callback will not be invoked. Lets cleanup.
     *start = start_;
     delete this;
   }
   return rv;
 }
 
 void PartialData::Core::OnIOComplete(int result) {
-  // TODO(vadimt): Remove ScopedTracker below once crbug.com/422516 is fixed.
-  tracked_objects::ScopedTracker tracking_profile(
-      FROM_HERE_WITH_EXPLICIT_FUNCTION(
-          "422516 PartialData::Core::OnIOComplete"));
-
   if (owner_)
     owner_->GetAvailableRangeCompleted(result, start_);
   delete this;
 }
 
 // -----------------------------------------------------------------------------
 
 PartialData::PartialData()
     : current_range_start_(0),
       current_range_end_(0),
@@ skipping 396 matching lines @@
   cached_min_len_ = result;
   if (result >= 0)
     result = 1;  // Return success, go ahead and validate the entry.
 
   CompletionCallback cb = callback_;
   callback_.Reset();
   cb.Run(result);
 }
 
 }  // namespace net