[iOS] Upstream web_controller_provider_impl.{h,mm}.

ios/web/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("//ios/build/config.gni")
 import("//ios/web/js_compile.gni")
 import("//testing/test.gni")
 import("//tools/grit/grit_rule.gni")
 
 source_set("web_arc") {
@@ skipping 533 matching lines @@
   ]
 
   assert_no_deps = ios_assert_no_deps
 }
 
 test("ios_web_inttests") {
   deps = [
     ":test_support",
     ":web",
     "//base/test:test_support",
-    "//ios/public/provider/web",
     "//ios/web/test:mojo_bindings",
     "//ios/web/test:packed_resources",
     "//ios/web/test:resources",
     "//mojo/edk/system",
     "//net:test_support",
     "//services/service_manager/public/cpp",
     "//testing/gtest",
     "//ui/base:test_support",
   ]
   sources = [
@@ skipping 50 matching lines @@
 }
 
 grit("resources") {
   source = "ios_web_resources.grd"
   use_qualified_include = true
   outputs = [
     "grit/ios_web_resources.h",
     "ios_web_resources.pak",
   ]
 }