[Omnibox] Clean up comment, don't ref closed bugs.

chrome/browser/autocomplete/autocomplete_controller.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 "chrome/browser/autocomplete/autocomplete_controller.h"
 
 #include <set>
 #include <string>
 
 #include "base/format_macros.h"
@@ skipping 240 matching lines @@
   const bool minimal_changes = (input_.text() == old_input_text) &&
       (input_.want_asynchronous_matches() == old_want_asynchronous_matches);
 
   expire_timer_.Stop();
   stop_timer_.Stop();
 
   // Start the new query.
   in_start_ = true;
   base::TimeTicks start_time = base::TimeTicks::Now();
   for (Providers::iterator i(providers_.begin()); i != providers_.end(); ++i) {
-    // TODO(mpearson): Remove timing code once bugs 178705 / 237703 / 168933
-    // are resolved.
+    // TODO(mpearson): Remove timing code once bug 178705 is resolved.
     base::TimeTicks provider_start_time = base::TimeTicks::Now();
     (*i)->Start(input_, minimal_changes, false);
     if (!input.want_asynchronous_matches())
       DCHECK((*i)->done());
     base::TimeTicks provider_end_time = base::TimeTicks::Now();
     std::string name = std::string("Omnibox.ProviderTime.") + (*i)->GetName();
     base::HistogramBase* counter = base::Histogram::FactoryGet(
         name, 1, 5000, 20, base::Histogram::kUmaTargetedHistogramFlag);
     counter->Add(static_cast<int>(
         (provider_end_time - provider_start_time).InMilliseconds()));
@@ skipping 395 matching lines @@
   expire_timer_.Stop();
   stop_timer_.Stop();
   done_ = true;
   if (clear_result && !result_.empty()) {
     result_.Reset();
     // NOTE: We pass in false since we're trying to only clear the popup, not
     // touch the edit... this is all a mess and should be cleaned up :(
     NotifyChanged(false);
   }
 }