Move ZoomController out of ChromeWebViewGuestDelegate.

extensions/browser/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/crypto.gni")
 import("//build/config/features.gni")
 
 # GYP version: extensions/extensions.gyp:extensions_browser
 source_set("browser") {
   sources = []
 
   deps = [
     "//components/copresence_endpoints",
     "//components/keyed_service/content",
     "//components/keyed_service/core",
     "//components/pref_registry",
     "//components/sessions:sessions_content",
+    "//components/ui/zoom:ui_zoom",
     "//components/web_cache/browser",
     "//components/web_modal",
     "//content/public/browser",
     "//crypto:platform",
     "//extensions/common",
     "//extensions/common/api",
     "//extensions/common/api:api_registration",
     "//extensions/strings",
     "//google_apis",
     "//skia",
@@ skipping 499 matching lines @@
         "api/vpn_provider/vpn_service.h",
         "api/vpn_provider/vpn_service_factory.h",
       ]
     }
   }
 
   if (is_win) {
     cflags = [ "/wd4267" ]  # TODO(jschuh): crbug.com/167187 fix size_t to int truncations.
   }
 }