Upstream iOS' Open from Clipboard component.

components/open_from_clipboard/clipboard_recent_content.h

+// 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.
+
+#ifndef COMPONENTS_OPEN_FROM_CLIPBOARD_CLIPBOARD_RECENT_CONTENT_H_
+#define COMPONENTS_OPEN_FROM_CLIPBOARD_CLIPBOARD_RECENT_CONTENT_H_
+
+#include <string>
+
+#include "base/macros.h"
+
+class GURL;
+
+// Helper class returning an URL if the content of the clipboard can be turned
+// into an URL, and if it estimates that the content of the clipboard is not too
+// old.
+class ClipboardRecentContent {
+ public:
+  // Returns an instance of the ClipboardContent singleton.
+  static ClipboardRecentContent* GetInstance();
+
+  // Returns true if the clipboard contains a recent URL, and copies it in
+  // |url|. Otherwise, returns false. |url| must not be null.
+  virtual bool GetRecentURLFromClipboard(GURL* url) const = 0;
+
+  // Sets which URL scheme this app can be opened with. Used by
+  // ClipboardRecentContent to determine whether or not the clipboard contains
+  // a relevant URL. |application_scheme| may be empty.
+  void set_application_scheme(const std::string& application_scheme) {
+    application_scheme_ = application_scheme;
+  }
+
+ protected:
+  ClipboardRecentContent() {}
+  virtual ~ClipboardRecentContent() {}
+  // Contains the URL scheme opening the app. May be empty.
+  std::string application_scheme_;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ClipboardRecentContent);
+};
+
+#endif  // COMPONENTS_OPEN_FROM_CLIPBOARD_CLIPBOARD_RECENT_CONTENT_H_