Move Document::execCommand() and queryCommand*() to "DocumentExecCommand.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 62 matching lines @@
     "commands/BreakBlockquoteCommand.cpp",
     "commands/BreakBlockquoteCommand.h",
     "commands/CompositeEditCommand.cpp",
     "commands/CompositeEditCommand.h",
     "commands/CreateLinkCommand.cpp",
     "commands/CreateLinkCommand.h",
     "commands/DeleteFromTextNodeCommand.cpp",
     "commands/DeleteFromTextNodeCommand.h",
     "commands/DeleteSelectionCommand.cpp",
     "commands/DeleteSelectionCommand.h",
+    "commands/DocumentExecCommand.cpp",
     "commands/DragAndDropCommand.cpp",
     "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",
@@ skipping 168 matching lines @@
     "//third_party/WebKit/Source:config",
     "//third_party/WebKit/Source:inside_blink",
   ]
 
   deps = [
     "//testing/gmock",
     "//testing/gtest",
     "//third_party/WebKit/Source/core:core",
   ]
 }