Introduce InsertIncrementalTextCommand to respect existing style for composition

third_party/WebKit/Source/core/editing/commands/InsertIncrementalTextCommand.h

Index: third_party/WebKit/Source/core/editing/commands/InsertIncrementalTextCommand.h
diff --git a/third_party/WebKit/Source/core/editing/commands/InsertIncrementalTextCommand.h b/third_party/WebKit/Source/core/editing/commands/InsertIncrementalTextCommand.h
new file mode 100644
index 0000000000000000000000000000000000000000..4236e1b7964baffa0de1c54a1390d8a849e9eca8
--- /dev/null
+++ b/third_party/WebKit/Source/core/editing/commands/InsertIncrementalTextCommand.h
@@ -0,0 +1,30 @@
+// Copyright (c) 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.
+
+#ifndef InsertIncrementalTextCommand_h
+#define InsertIncrementalTextCommand_h
+
+#include "core/editing/commands/InsertTextCommand.h"
+
+namespace blink {
+
+class InsertIncrementalTextCommand final : public InsertTextCommand {
+ public:
+  static InsertIncrementalTextCommand* create(
+      Document&,
+      const String&,
+      bool selectInsertedText = false,
+      RebalanceType = RebalanceLeadingAndTrailingWhitespaces);
+
+ private:
+  InsertIncrementalTextCommand(Document&,
+                               const String& text,
+                               bool selectInsertedText,
+                               RebalanceType);
+  void doApply(EditingState*) override;
+};
+
+}  // namespace blink
+
+#endif  // InsertIncrementalTextCommand_h