Move favicon_util to favicon_base component

BUG=None
TBR=sky@chromium.org

Review URL: https://codereview.chromium.org/333803010

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@277501 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 41 insertions, 0 deletions

diff --git a/components/favicon_base/favicon_util.h b/components/favicon_base/favicon_util.h
new file mode 100644
index 0000000..ee59428
--- /dev/null
+++ b/components/favicon_base/favicon_util.h
@@ -0,0 +1,41 @@
+// 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_BASE_FAVICON_UTIL_H_
+#define COMPONENTS_FAVICON_BASE_FAVICON_UTIL_H_
+
+#include <vector>
+
+#include "components/favicon_base/favicon_types.h"
+#include "ui/base/layout.h"
+
+namespace gfx {
+class Image;
+}
+
+namespace favicon_base {
+
+// Returns the scale factors at which favicons should be fetched. This is
+// different from ui::GetSupportedScaleFactors() because clients which do
+// not support 1x should still fetch a favicon for 1x to push to sync. This
+// guarantees that the clients receiving sync updates pushed by this client
+// receive a favicon (potentially of the wrong scale factor) and do not show
+// the default favicon.
+std::vector<ui::ScaleFactor> GetFaviconScaleFactors();
+
+// Sets the color space used for converting |image| to an NSImage to the
+// system colorspace. This makes the favicon look the same in the browser UI
+// as it does in the renderer.
+void SetFaviconColorSpace(gfx::Image* image);
+
+// Takes a vector of png-encoded frames, decodes them, and converts them to
+// a favicon of size favicon_size (in DIPs) at the desired ui scale factors.
+gfx::Image SelectFaviconFramesFromPNGs(
+    const std::vector<favicon_base::FaviconRawBitmapResult>& png_data,
+    const std::vector<ui::ScaleFactor>& scale_factors,
+    int favicon_size);
+
+}  // namspace favicon_base
+
+#endif  // COMPONENTS_FAVICON_BASE_FAVICON_UTIL_H_