Move LayoutTestMessageFilter-related IPCs to their own message file.

content/shell/BUILD.gn

 # Copyright 2014 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("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//tools/grit/repack.gni")
 import("//tools/grit/grit_rule.gni")
 if (is_android) {
   import("//build/config/android/config.gni")
@@ skipping 105 matching lines @@
     "browser/shell_speech_recognition_manager_delegate.h",
     "browser/shell_url_request_context_getter.cc",
     "browser/shell_url_request_context_getter.h",
     "browser/shell_web_contents_view_delegate_android.cc",
     "browser/shell_web_contents_view_delegate_creator.h",
     "browser/shell_web_contents_view_delegate.h",
     "browser/shell_web_contents_view_delegate_mac.mm",
     "browser/shell_web_contents_view_delegate_win.cc",
     "browser/webkit_test_controller.cc",
     "browser/webkit_test_controller.h",
+    "common/layout_test/layout_test_messages.cc",
+    "common/layout_test/layout_test_messages.h",
     "common/leak_detection_result.h",
     "common/shell_content_client.cc",
     "common/shell_content_client.h",
     "common/shell_messages.cc",
     "common/shell_messages.h",
     "common/shell_switches.cc",
     "common/shell_switches.h",
     "common/shell_test_configuration.cc",
     "common/shell_test_configuration.h",
     "common/test_runner/test_preferences.cc",
@@ skipping 356 matching lines @@
   if (is_android && !is_android_webview_build) {
     # Some tests rely on this tool. It might be nicer if these tests relied on
     # image diff rather than having content shell depend on it.
     datadeps = [
       "//tools/imagediff($host_toolchain)",
     ]
   }
 }
 
 }