Upstream web_controller_provider and dependencies

ios/public/provider/web/web_controller_provider.mm

+// 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.
+
+#include "ios/public/provider/web/web_controller_provider.h"
+
+namespace ios {
+
+static WebControllerProviderFactory* g_web_controller_provider_factory;
+
+void SetWebControllerProviderFactory(
+    WebControllerProviderFactory* provider_factory) {
+  g_web_controller_provider_factory = provider_factory;
+}
+
+WebControllerProviderFactory* GetWebControllerProviderFactory() {
+  return g_web_controller_provider_factory;
+}
+
+WebControllerProvider::WebControllerProvider(web::BrowserState* browser_state) {
+}
+
+WebControllerProvider::~WebControllerProvider() {
+}
+
+bool WebControllerProvider::SuppressesDialogs() const {
+  return false;
+}
+
+web::WebState* WebControllerProvider::GetWebState() const {
+  return nullptr;
+}
+
+void WebControllerProvider::InjectScript(const std::string& script,
+                                         web::JavaScriptCompletion completion) {
+  if (completion)
+    completion(nil, nil);
+}
+
+WebControllerProviderFactory::WebControllerProviderFactory() {
+}
+
+WebControllerProviderFactory::~WebControllerProviderFactory() {
+}
+
+scoped_ptr<WebControllerProvider>
+WebControllerProviderFactory::CreateWebControllerProvider(
+    web::BrowserState* browser_state) {
+  return scoped_ptr<WebControllerProvider>(
+      new WebControllerProvider(browser_state));
+}
+
+}  // namespace ios