Upstream iOS' Open from Clipboard component.

components/open_from_clipboard/clipboard_url_provider.cc

+// 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 "components/open_from_clipboard/clipboard_url_provider.h"
+
+#include "base/logging.h"
+#include "base/strings/utf_string_conversions.h"
+#include "components/omnibox/autocomplete_input.h"
+#include "components/open_from_clipboard/clipboard_recent_content.h"
+#include "grit/components_strings.h"
+#include "ui/base/l10n/l10n_util.h"
+
+namespace {
+// Score defining the priority of the suggestion. 1600 guarantees that the
+// suggestion will always be first. See table in autocomplete_provider.h.
+const int kClipboardURLProviderRelevance = 1600;
+}  // namespace
+
+ClipboardURLProvider::ClipboardURLProvider(
+    ClipboardRecentContent* clipboard_recent_content)
+    : AutocompleteProvider(AutocompleteProvider::TYPE_SHORTCUTS),
+      clipboard_recent_content_(clipboard_recent_content) {
+  DCHECK(clipboard_recent_content_);
+}
+
+ClipboardURLProvider::~ClipboardURLProvider() {
+}
+
+void ClipboardURLProvider::Start(const AutocompleteInput& input,
+                                 bool minimal_changes,
+                                 bool called_due_to_focus) {
+  matches_.clear();
+  // Attempt to add an AutocompleteMatch only if the user has not entered
+  // anything in the omnibox.
+  if (input.cursor_position() == base::string16::npos) {
+    GURL url;
+    if (clipboard_recent_content_->GetRecentURLFromClipboard(&url)) {
+      AutocompleteMatch match(this, kClipboardURLProviderRelevance, false,
+                              AutocompleteMatchType::NAVSUGGEST_PERSONALIZED);
+      match.allowed_to_be_default_match = true;
+      match.destination_url = url;
+      match.contents.assign(base::UTF8ToUTF16(url.possibly_invalid_spec()));

[sdefresne, 2015/02/18 15:10:07]

nit: since you ensure that GetRecentURLFromClipboard() returns a valid GURL, I
think you can use url.spec().

[sdefresne, 2015/02/18 15:10:07]

nit: since you ensure that GetRecentURLFromClipboard() returns a valid GURL, I
think you can use url.spec().

+      AutocompleteMatch::ClassifyLocationInString(
+          base::string16::npos, 0, match.contents.length(),
+          ACMatchClassification::URL, &match.contents_class);
+
+      match.description.assign(
+          l10n_util::GetStringUTF16(IDS_LINK_FROM_CLIPBOARD));
+      AutocompleteMatch::ClassifyLocationInString(
+          base::string16::npos, 0, match.description.length(),
+          ACMatchClassification::URL, &match.description_class);
+
+      matches_.push_back(match);
+    }
+  }
+  done_ = true;
+}