SpellCheck: the custom dictionary should be per profile.

chrome/browser/profiles/profile_impl.cc

 // Copyright (c) 2011 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/profiles/profile_impl.h"
 
 #include "base/command_line.h"
 #include "base/compiler_specific.h"
 #include "base/environment.h"
 #include "base/file_path.h"
@@ skipping 1663 matching lines @@
 chrome_browser_net::Predictor* ProfileImpl::GetNetworkPredictor() {
   return predictor_;
 }
 
 void ProfileImpl::ClearNetworkingHistorySince(base::Time time) {
   io_data_.ClearNetworkingHistorySince(time);
 }
 
 SpellCheckProfile* ProfileImpl::GetSpellCheckProfile() {
   if (!spellcheck_profile_.get())
-    spellcheck_profile_.reset(new SpellCheckProfile());
+    spellcheck_profile_.reset(new SpellCheckProfile(path_));
   return spellcheck_profile_.get();
 }