Move class EditCommandComposition to UndoStep.h/cpp

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 118 matching lines @@
     "commands/SplitElementCommand.cpp",
     "commands/SplitElementCommand.h",
     "commands/SplitTextNodeCommand.cpp",
     "commands/SplitTextNodeCommand.h",
     "commands/SplitTextNodeContainingElementCommand.cpp",
     "commands/SplitTextNodeContainingElementCommand.h",
     "commands/TypingCommand.cpp",
     "commands/TypingCommand.h",
     "commands/UndoStack.cpp",
     "commands/UndoStack.h",
+    "commands/UndoStep.cpp",
     "commands/UndoStep.h",
     "commands/UnlinkCommand.cpp",
     "commands/UnlinkCommand.h",
     "commands/WrapContentsInDummySpanCommand.cpp",
     "commands/WrapContentsInDummySpanCommand.h",
     "iterators/BackwardsCharacterIterator.cpp",
     "iterators/BackwardsTextBuffer.cpp",
     "iterators/BackwardsTextBuffer.h",
     "iterators/BitStack.cpp",
     "iterators/CharacterIterator.cpp",
@@ skipping 113 matching lines @@
     "//third_party/WebKit/Source:config",
     "//third_party/WebKit/Source:inside_blink",
   ]
 
   deps = [
     "//testing/gmock",
     "//testing/gtest",
     "//third_party/WebKit/Source/core:core",
   ]
 }