Add missing .h files to .gn files that have a .cc file next to it in the gn file already.

third_party/WebKit/Source/modules/webdatabase/BUILD.gn

 # Copyright 2016 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.
 
 import("//third_party/WebKit/Source/modules/modules.gni")
 
 blink_modules_sources("webdatabase") {
   sources = [
     "ChangeVersionData.h",
     "ChangeVersionWrapper.cpp",
@@ skipping 21 matching lines @@
     "DatabaseTracker.h",
     "InspectorDatabaseAgent.cpp",
     "InspectorDatabaseAgent.h",
     "InspectorDatabaseResource.cpp",
     "InspectorDatabaseResource.h",
     "QuotaTracker.cpp",
     "QuotaTracker.h",
     "SQLError.cpp",
     "SQLError.h",
     "SQLResultSet.cpp",
+    "SQLResultSet.h",
     "SQLResultSetRowList.cpp",
+    "SQLResultSetRowList.h",
     "SQLStatement.cpp",
     "SQLStatement.h",
     "SQLStatementBackend.cpp",
     "SQLStatementBackend.h",
     "SQLTransaction.cpp",
     "SQLTransaction.h",
     "SQLTransactionBackend.cpp",
     "SQLTransactionBackend.h",
     "SQLTransactionClient.cpp",
     "SQLTransactionClient.h",
     "SQLTransactionCoordinator.cpp",
     "SQLTransactionCoordinator.h",
     "SQLTransactionState.h",
     "SQLTransactionStateMachine.cpp",
     "SQLTransactionStateMachine.h",
     "StorageLog.h",
     "sqlite/SQLLog.h",
     "sqlite/SQLValue.cpp",
+    "sqlite/SQLValue.h",
     "sqlite/SQLiteAuthorizer.cpp",
     "sqlite/SQLiteDatabase.cpp",
     "sqlite/SQLiteDatabase.h",
     "sqlite/SQLiteFileSystem.cpp",
     "sqlite/SQLiteFileSystem.h",
     "sqlite/SQLiteStatement.cpp",
     "sqlite/SQLiteStatement.h",
     "sqlite/SQLiteTransaction.cpp",
     "sqlite/SQLiteTransaction.h",
   ]
 
   if (is_win) {
     sources += [ "sqlite/SQLiteFileSystemWin.cpp" ]
   } else if (is_posix) {
     sources += [ "sqlite/SQLiteFileSystemPosix.cpp" ]
   }
 }