Move app/sql/* files to sql/ directory.

sql/diagnostic_error_delegate.h

-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// 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.
 
-#ifndef APP_SQL_DIAGNOSTIC_ERROR_DELEGATE_H_
-#define APP_SQL_DIAGNOSTIC_ERROR_DELEGATE_H_
+#ifndef SQL_DIAGNOSTIC_ERROR_DELEGATE_H_
+#define SQL_DIAGNOSTIC_ERROR_DELEGATE_H_
 #pragma once
 
-#include "app/sql/connection.h"
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
+#include "sql/connection.h"
 
 namespace sql {
 
 // This class handles the exceptional sqlite errors that we might encounter
 // if for example the db is corrupted. Right now we just generate a UMA
 // histogram for release and an assert for debug builds.
 //
 // Why is it a template you ask? well, that is a funny story. The histograms
 // need to be singletons that is why they are always static at the function
 // scope, but we cannot use the Singleton class because they are not default
@@ skipping 18 matching lines @@
     error &= 0xff;
 
     // The histogram values from sqlite result codes go currently from 1 to
     // 26 currently but 50 gives them room to grow.
     UMA_HISTOGRAM_ENUMERATION(UniqueT::name(), error, 50);
   }
 };
 
 }  // namespace sql
 
-#endif  // APP_SQL_DIAGNOSTIC_ERROR_DELEGATE_H_
+#endif  // SQL_DIAGNOSTIC_ERROR_DELEGATE_H_