Some fleshing out the mojo based localstorage implementation.

content/browser/dom_storage/dom_storage_context_wrapper.cc

 // Copyright 2013 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 "content/browser/dom_storage/dom_storage_context_wrapper.h"
 
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 69 matching lines @@
   MojoState(const std::string& mojo_user_id, const base::FilePath& subdirectory)
       : mojo_user_id_(mojo_user_id),
         subdirectory_(subdirectory),
         connection_state_(NO_CONNECTION),
         weak_ptr_factory_(this) {}
 
   void OpenLocalStorage(const url::Origin& origin,
                         mojom::LevelDBWrapperRequest request);
 
  private:
-  void LevelDBWrapperImplHasNoBindings(const url::Origin& origin) {
+  void OnLevelDDWrapperHasNoBindings(const url::Origin& origin) {
     DCHECK(level_db_wrappers_.find(origin) != level_db_wrappers_.end());
     level_db_wrappers_.erase(origin);
   }
 
   // Part of our asynchronous directory opening called from OpenLocalStorage().
   void OnDirectoryOpened(filesystem::FileError err);
   void OnDatabaseOpened(leveldb::DatabaseError status);
 
   // The (possibly delayed) implementation of OpenLocalStorage(). Can be called
   // directly from that function, or through |on_database_open_callbacks_|.
@@ skipping 105 matching lines @@
   on_database_opened_callbacks_.clear();
 }
 
 void DOMStorageContextWrapper::MojoState::BindLocalStorage(
     const url::Origin& origin,
     mojom::LevelDBWrapperRequest request) {
   if (level_db_wrappers_.find(origin) == level_db_wrappers_.end()) {
     level_db_wrappers_[origin] = make_scoped_ptr(new LevelDBWrapperImpl(
         database_.get(),
         origin.Serialize(),
-        base::Bind(&MojoState::LevelDBWrapperImplHasNoBindings,
+        kPerStorageAreaQuota + kPerStorageAreaOverQuotaAllowance,
+        base::Bind(&MojoState::OnLevelDDWrapperHasNoBindings,
                    base::Unretained(this),
                    origin)));
   }
 
   level_db_wrappers_[origin]->Bind(std::move(request));
 }
 
 DOMStorageContextWrapper::DOMStorageContextWrapper(
     const std::string& mojo_user_id,
     const base::FilePath& profile_path,
@@ skipping 107 matching lines @@
       base::Bind(&DOMStorageContextImpl::Flush, context_));
 }
 
 void DOMStorageContextWrapper::OpenLocalStorage(
     const url::Origin& origin,
     mojom::LevelDBWrapperRequest request) {
   mojo_state_->OpenLocalStorage(origin, std::move(request));
 }
 
 }  // namespace content