Upstream most of the iOS WebUI support in ios/web/

ios/web/webui/web_ui_ios_data_source_impl.h

+// Copyright 2014 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.
+
+#ifndef IOS_WEB_WEBUI_WEB_UI_IOS_DATA_SOURCE_IMPL_H_
+#define IOS_WEB_WEBUI_WEB_UI_IOS_DATA_SOURCE_IMPL_H_
+
+#include <map>
+#include <string>
+
+#include "base/basictypes.h"
+#include "base/callback.h"
+#include "base/compiler_specific.h"
+#include "base/values.h"
+#include "ios/web/public/url_data_source_ios.h"
+#include "ios/web/public/web_ui_ios_data_source.h"
+#include "ios/web/webui/url_data_manager_ios.h"
+#include "ios/web/webui/url_data_source_ios_impl.h"
+
+namespace web {
+
+class WebUIIOSDataSourceImpl : public URLDataSourceIOSImpl,
+                               public WebUIIOSDataSource {
+ public:
+  // WebUIIOSDataSource implementation:
+  void AddString(const std::string& name, const base::string16& value) override;
+  void AddString(const std::string& name, const std::string& value) override;
+  void AddLocalizedString(const std::string& name, int ids) override;
+  void AddBoolean(const std::string& name, bool value) override;
+  void SetJsonPath(const std::string& path) override;
+  void AddResourcePath(const std::string& path, int resource_id) override;
+  void SetDefaultResource(int resource_id) override;
+  void DisableDenyXFrameOptions() override;
+
+ protected:
+  ~WebUIIOSDataSourceImpl() override;
+
+  // Completes a request by sending our dictionary of localized strings.
+  void SendLocalizedStringsAsJSON(
+      const URLDataSourceIOS::GotDataCallback& callback);
+
+  // Completes a request by sending the file specified by |idr|.
+  void SendFromResourceBundle(const URLDataSourceIOS::GotDataCallback& callback,
+                              int idr);
+
+ private:
+  class InternalDataSource;
+  friend class InternalDataSource;
+  friend class WebUIIOSDataSourceTest;
+  friend class WebUIIOSDataSource;
+
+  explicit WebUIIOSDataSourceImpl(const std::string& source_name);
+
+  // Methods that match URLDataSource which are called by
+  // InternalDataSource.
+  std::string GetSource() const;
+  std::string GetMimeType(const std::string& path) const;
+  void StartDataRequest(const std::string& path,
+                        const URLDataSourceIOS::GotDataCallback& callback);
+
+  void disable_set_font_strings_for_testing() {
+    disable_set_font_strings_ = true;
+  }
+
+  // The name of this source.
+  // E.g., for favicons, this could be "favicon", which results in paths for
+  // specific resources like "favicon/34" getting sent to this source.
+  std::string source_name_;
+  int default_resource_;
+  std::string json_path_;
+  std::map<std::string, int> path_to_idr_map_;
+  base::DictionaryValue localized_strings_;
+  bool deny_xframe_options_;
+  bool disable_set_font_strings_;
+  bool replace_existing_source_;
+
+  DISALLOW_COPY_AND_ASSIGN(WebUIIOSDataSourceImpl);
+};
+
+}  // web
+
+#endif  // IOS_WEB_WEBUI_WEB_UI_IOS_DATA_SOURCE_IMPL_H_