Only apply extension throttling quota to sync, not local.

chrome/browser/extensions/extensions_quota_service.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/extensions/extensions_quota_service.h"
 
 #include "base/message_loop.h"
 #include "base/stl_util.h"
 #include "chrome/browser/extensions/extension_function.h"
 
@@ skipping 17 matching lines @@
   DCHECK(CalledOnValidThread());
   purge_timer_.Stop();
   Purge();
 }
 
 bool ExtensionsQuotaService::Assess(const std::string& extension_id,
     ExtensionFunction* function, const ListValue* args,
     const base::TimeTicks& event_time) {
   DCHECK(CalledOnValidThread());
 
+  if (function->ShouldSkipQuotaLimiting())
+    return true;
+
   // Lookup function list for extension.
   FunctionHeuristicsMap& functions = function_heuristics_[extension_id];
 
   // Lookup heuristics for function, create if necessary.
   QuotaLimitHeuristics& heuristics = functions[function->name()];
   if (heuristics.empty())
     function->GetQuotaLimitHeuristics(&heuristics);
 
   if (heuristics.empty())
     return true;  // No heuristic implies no limit.
@@ skipping 109 matching lines @@
       return false;
     }
   }
 
   // We can go negative since we check has_tokens when we get to *next* bucket,
   // and for the small interval all that matters is whether we used up all the
   // tokens (which is true if num_tokens_ <= 0).
   bucket->DeductToken();
   return true;
 }