Moved favicon_handler_delegate.h to a new component directory.

BUG=359084

Review URL: https://codereview.chromium.org/226183003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@262443 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 40 insertions, 0 deletions

diff --git a/components/favicon/core/favicon_handler_delegate.h b/components/favicon/core/favicon_handler_delegate.h
new file mode 100644
index 0000000..2621902
--- /dev/null
+++ b/components/favicon/core/favicon_handler_delegate.h
@@ -0,0 +1,40 @@
+// 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 COMPONENTS_FAVICON_CORE_FAVICON_HANDLER_DELEGATE_H_
+#define COMPONENTS_FAVICON_CORE_FAVICON_HANDLER_DELEGATE_H_
+
+class GURL;
+
+namespace content {
+// TODO(jif): Abstract the NavigationEntry (crbug.com/359598).
+class NavigationEntry;
+}
+
+// This class provides a delegate interface for a FaviconHandler.  It allows the
+// FaviconHandler to ask its delegate for information or notify its delegate
+// about changes.
+class FaviconHandlerDelegate {
+ public:
+  // Returns the current NavigationEntry.
+  // TODO(jif): Abstract the NavigationEntry (crbug.com/359598).
+  virtual content::NavigationEntry* GetActiveEntry() = 0;
+
+  // Starts the download for the given favicon. When finished, the delegate
+  // will call OnDidDownloadFavicon() with the results.
+  // Returns the unique id of the download request. The id will be passed
+  // in OnDidDownloadFavicon().
+  // Bitmaps with pixel sizes larger than |max_bitmap_size| are filtered out
+  // from the bitmap results. If there are no bitmap results <=
+  // |max_bitmap_size|, the smallest bitmap is resized to |max_bitmap_size| and
+  // is the only result. A |max_bitmap_size| of 0 means unlimited.
+  virtual int StartDownload(const GURL& url, int max_bitmap_size) = 0;
+
+  // Notifies the delegate that the favicon for the active entry was updated.
+  // |icon_url_changed| is true if a favicon with a different icon URL has
+  // been selected since the previous call to NotifyFaviconUpdated().
+  virtual void NotifyFaviconUpdated(bool icon_url_changed) = 0;
+};
+
+#endif  // COMPONENTS_FAVICON_CORE_FAVICON_HANDLER_DELEGATE_H_