Move chrome/browser/gtk to chrome/browser/ui/gtk

chrome/browser/ui/gtk/tabstrip_origin_provider.h

+// Copyright (c) 2009 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 CHROME_BROWSER_UI_GTK_TABSTRIP_ORIGIN_PROVIDER_H_
+#define CHROME_BROWSER_UI_GTK_TABSTRIP_ORIGIN_PROVIDER_H_
+#pragma once
+
+namespace gfx{
+class Point;
+}
+
+// Abstract interface that provides an offset of a widget. Many pieces of the
+// UI don't need the full BrowserWindowGtk, but just need information about
+// it's position relative to the tabstrip to draw correctly. This interface
+// exists to make it easier to test piece by piece.
+class TabstripOriginProvider {
+ public:
+  virtual ~TabstripOriginProvider() { }
+
+  // Return the origin of the tab strip in coordinates relative to where we
+  // start drawing the background theme image. This is the x coordinate of
+  // the origin of the GdkWindow of widget(), but the y coordinate of the origin
+  // of widget() itself.
+  // Used to help other widgets draw their background relative to the tabstrip.
+  // Should only be called after both the tabstrip and |widget| have been
+  // allocated.
+  virtual gfx::Point GetTabStripOriginForWidget(GtkWidget* widget) = 0;
+};
+
+#endif  // CHROME_BROWSER_UI_GTK_TABSTRIP_ORIGIN_PROVIDER_H_