Expose thumbnails of pages to iOS share extensions.

ios/chrome/browser/ui/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("//build/config/ios/rules.gni")
 
 source_set("ui") {
   sources = [
     "UIView+SizeClassSupport.h",
     "UIView+SizeClassSupport.mm",
@@ skipping 99 matching lines @@
     "//ios/chrome/test:test_support",
     "//ios/testing:ocmock_support",
     "//ios/web",
     "//ios/web:test_support",
     "//net",
     "//net:test_support",
     "//testing/gmock",
     "//testing/gtest",
     "//third_party/ocmock",
     "//ui/base",
+    "//ui/base:test_support",
     "//url",
   ]
 }
 
 bundle_data_ib_file("native_content_controller_test_xib") {
   visibility = [ ":unit_tests" ]
   testonly = true
   source = "native_content_controller_test.xib"
 }
 
@@ skipping 287 matching lines @@
     "//ios/chrome/browser/tabs:tabs_internal",
     "//ios/chrome/browser/ui/omnibox:omnibox_internal",
     "//ios/chrome/browser/ui/toolbar",
     "//ios/chrome/test/base:perf_test_support",
     "//testing/gtest",
     "//third_party/ocmock",
     "//ui/base:test_support",
   ]
   libs = [ "UIKit.framework" ]
 }