[ios clean] Creates ToolbarWebState Mediator

ios/clean/chrome/browser/ui/toolbar/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.
 
 source_set("toolbar") {
   sources = [
     "toolbar_coordinator.h",
     "toolbar_coordinator.mm",
+    "toolbar_mediator.h",
+    "toolbar_mediator.mm",
   ]
 
   configs += [ "//build/config/compiler:enable_arc" ]
 
   deps = [
     ":toolbar_ui",
     "//base",
     "//ios/clean/chrome/browser",
     "//ios/clean/chrome/browser/ui/commands",
     "//ios/clean/chrome/browser/ui/tools",
     "//ios/shared/chrome/browser/coordinator_context",
     "//ios/web",
   ]
 }
 
 source_set("toolbar_ui") {
   sources = [
+    "toolbar_consumer.h",
     "toolbar_view_controller.h",
     "toolbar_view_controller.mm",
   ]
   deps = [
     ":toolbar_components_ui",
     "//base",
     "//ios/clean/chrome/browser/ui/actions",
     "//ios/clean/chrome/browser/ui/animators",
     "//ios/clean/chrome/browser/ui/commands",
     "//ios/clean/chrome/browser/ui/tools",
@@ skipping 11 matching lines @@
     "toolbar_component_options.h",
   ]
   deps = [
     "//base",
     "//ios/chrome/app/theme",
     "//ios/chrome/browser/ui",
   ]
   libs = [ "UIKit.framework" ]
   configs += [ "//build/config/compiler:enable_arc" ]
 }