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

cc/resources/tile_data.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_TILE_DATA_H_
+#define CC_RESOURCES_TILE_DATA_H_
+
+#include "base/memory/scoped_ptr.h"
+#include "cc/resources/tile_priority.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_RASTER_MODE = 0,
+  HIGH_QUALITY_NO_LCD_RASTER_MODE = 1,
+  LOW_QUALITY_RASTER_MODE = 2,
+  NUM_RASTER_MODES = 3
+};
+
+scoped_ptr<base::Value> RasterModeAsValue(RasterMode mode);
+
+// Data that is passed to raster tasks.
+struct RasterTaskMetadata {
+  scoped_ptr<base::Value> AsValue() const;
+  bool is_tile_in_pending_tree_now_bin;
+  TileResolution tile_resolution;
+  int layer_id;
+  const void* tile_id;
+  int source_frame_number;
+};
+
+}  // namespace cc
+
+#endif  // CC_RESOURCES_TILE_DATA_H_