Add 'Dump Database' tab to syncfs-internals (only for v2 for now)

chrome/browser/sync_file_system/sync_file_system_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/sync_file_system/sync_file_system_service.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/format_macros.h"
@@ skipping 306 matching lines @@
   content::StoragePartition* storage_partition =
       content::BrowserContext::GetStoragePartitionForSite(profile_, origin);
   fileapi::FileSystemContext* file_system_context =
       storage_partition->GetFileSystemContext();
   local_service_->MaybeInitializeFileSystemContext(
       origin, file_system_context,
       base::Bind(&SyncFileSystemService::DidInitializeFileSystemForDump,
                  AsWeakPtr(), origin, callback));
 }
 
+scoped_ptr<base::ListValue> SyncFileSystemService::DumpDatabase() {
+  return remote_service_->DumpDatabase();
+}
+
 void SyncFileSystemService::GetFileSyncStatus(
     const FileSystemURL& url, const SyncFileStatusCallback& callback) {
   DCHECK(local_service_);
   DCHECK(GetRemoteService(url.origin()));
 
   // It's possible to get an invalid FileEntry.
   if (!url.is_valid()) {
     base::MessageLoopProxy::current()->PostTask(
         FROM_HERE,
         base::Bind(callback,
@@ skipping 366 matching lines @@
     v2_remote_service_ = RemoteFileSyncService::CreateForBrowserContext(
         RemoteFileSyncService::V2, profile_);
     v2_remote_service_->AddServiceObserver(v2_remote_syncer.get());
     v2_remote_service_->AddFileStatusObserver(this);
     v2_remote_service_->SetRemoteChangeProcessor(local_service_.get());
   }
   return v2_remote_service_.get();
 }
 
 }  // namespace sync_file_system