[Android] Add spellchecking support in android_webview.

android_webview/BUILD.gn

 # Copyright 2015 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/android/config.gni")
 import("//build/config/android/rules.gni")
 import("//build/config/locales.gni")
 import("//tools/grit/repack.gni")
 import("system_webview_apk_tmpl.gni")
 import("webview_repack_locales.gni")
@@ skipping 573 matching lines @@
     "//components/metrics",
     "//components/metrics:gpu",
     "//components/metrics:net",
     "//components/metrics:profiler",
     "//components/metrics:ui",
     "//components/navigation_interception",
     "//components/prefs",
     "//components/printing/browser",
     "//components/printing/common",
     "//components/printing/renderer",
+    "//components/spellcheck/browser",
+    "//components/spellcheck/renderer",
     "//components/supervised_user_error_page",
     "//components/supervised_user_error_page:gin",
     "//components/version_info",
     "//components/visitedlink/browser",
     "//components/visitedlink/renderer",
     "//components/web_contents_delegate_android:web_contents_delegate_android",
     "//components/web_restrictions:browser",
     "//content",
     "//content/public/app:both",
     "//content/public/browser",
@@ skipping 93 matching lines @@
     "java/src/org/chromium/android_webview/permission/AwGeolocationCallback.java",
     "java/src/org/chromium/android_webview/permission/AwPermissionRequest.java",
     "java/src/org/chromium/android_webview/policy/AwPolicyProvider.java",
   ]
   deps = [
     ":resources",
     ":strings_grd",
     "//base:base_java",
     "//components/external_video_surface:java",
     "//components/navigation_interception/android:navigation_interception_java",
+    "//components/spellcheck/browser/android:java",
     "//components/web_contents_delegate_android:web_contents_delegate_android_java",
     "//components/web_restrictions:web_restrictions_java",
     "//content/public/android:content_java",
     "//device/geolocation:geolocation_java",
     "//net/android:net_java",
     "//third_party/android_tools:android_support_annotations_java",
     "//ui/android:ui_java",
   ]
 
   if (enable_configuration_policy) {
@@ skipping 58 matching lines @@
     android_manifest = get_target_outputs(":system_webview_manifest")
     android_manifest = android_manifest[1]
     android_manifest_dep = ":system_webview_manifest"
     deps = [
       ":system_webview_resources",
       "//android_webview/glue",
     ]
     apk_name = "SystemWebView"
   }
 }