[ios] BubbleViewController and BubbleView stubs.

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 359 matching lines @@
     "//ios/chrome/browser/search_engines",
     "//ios/chrome/browser/sessions",
     "//ios/chrome/browser/snapshots",
     "//ios/chrome/browser/snapshots:snapshots_internal",
     "//ios/chrome/browser/store_kit",
     "//ios/chrome/browser/tabs",
     "//ios/chrome/browser/ui/activity_services",
     "//ios/chrome/browser/ui/alert_coordinator",
     "//ios/chrome/browser/ui/authentication",
     "//ios/chrome/browser/ui/bookmarks",
+    "//ios/chrome/browser/ui/bubble",
     "//ios/chrome/browser/ui/colors",
     "//ios/chrome/browser/ui/commands",
     "//ios/chrome/browser/ui/context_menu",
     "//ios/chrome/browser/ui/contextual_search",
     "//ios/chrome/browser/ui/dialogs:dialogs_internal",
     "//ios/chrome/browser/ui/elements:elements_internal",
     "//ios/chrome/browser/ui/find_bar",
     "//ios/chrome/browser/ui/first_run",
     "//ios/chrome/browser/ui/history",
     "//ios/chrome/browser/ui/keyboard",
@@ skipping 166 matching lines @@
     "//ios/chrome/browser/web_state_list",
     "//ios/chrome/browser/web_state_list:test_support",
     "//ios/chrome/test/base:perf_test_support",
     "//ios/web/public/test/fakes",
     "//testing/gtest",
     "//third_party/ocmock",
     "//ui/base:test_support",
   ]
   libs = [ "UIKit.framework" ]
 }