cc: Eliminate tile.h's dependency on tile_manager.h

cc/resources/raster_mode.h

+// Copyright 2013 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 CC_RESOURCES_RASTER_MODE_H_
+#define CC_RESOURCES_RASTER_MODE_H_
+
+#include "base/memory/scoped_ptr.h"
+
+namespace base {
+class Value;
+}
+
+namespace cc {
+
+// Low quality implies no lcd test;
+// high quality implies lcd text.
+// Note that the order of these matters, from "better" to "worse" in terms of
+// quality.
+enum RasterMode {
+  HIGH_QUALITY_NO_LCD_RASTER_MODE = 0,
+  HIGH_QUALITY_RASTER_MODE = 1,
+  LOW_QUALITY_RASTER_MODE = 2,
+  NUM_RASTER_MODES = 3
+};
+
+scoped_ptr<base::Value> RasterModeAsValue(RasterMode mode);
+
+}  // namespace cc
+
+#endif  // CC_RESOURCES_RASTER_MODE_H_