Introduce InsertIncrementalTextCommand to respect existing style for composition

third_party/WebKit/Source/core/editing/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/core/core.gni")
 
 blink_core_sources("editing") {
   split_count = 5
   sources = [
     "CaretBase.cpp",
@@ skipping 73 matching lines @@
     "commands/DragAndDropCommand.h",
     "commands/EditCommand.cpp",
     "commands/EditCommand.h",
     "commands/EditingState.cpp",
     "commands/EditingState.h",
     "commands/EditorCommand.cpp",
     "commands/FormatBlockCommand.cpp",
     "commands/FormatBlockCommand.h",
     "commands/IndentOutdentCommand.cpp",
     "commands/IndentOutdentCommand.h",
+    "commands/InsertIncrementalTextCommand.cpp",
+    "commands/InsertIncrementalTextCommand.h",
     "commands/InsertIntoTextNodeCommand.cpp",
     "commands/InsertIntoTextNodeCommand.h",
     "commands/InsertLineBreakCommand.cpp",
     "commands/InsertLineBreakCommand.h",
     "commands/InsertListCommand.cpp",
     "commands/InsertListCommand.h",
     "commands/InsertNodeBeforeCommand.cpp",
     "commands/InsertNodeBeforeCommand.h",
     "commands/InsertParagraphSeparatorCommand.cpp",
     "commands/InsertParagraphSeparatorCommand.h",
@@ skipping 152 matching lines @@
     "//third_party/WebKit/Source:config",
     "//third_party/WebKit/Source:inside_blink",
   ]
 
   deps = [
     "//testing/gmock",
     "//testing/gtest",
     "//third_party/WebKit/Source/core:core",
   ]
 }