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

cc/resources/raster_mode.cc

Index: cc/resources/raster_mode.cc
diff --git a/cc/resources/raster_mode.cc b/cc/resources/raster_mode.cc
new file mode 100644
index 0000000000000000000000000000000000000000..b35bc0be42d3d706319f5046a32f83565c0f2c25
--- /dev/null
+++ b/cc/resources/raster_mode.cc
@@ -0,0 +1,32 @@
+// 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.
+
+#include "cc/resources/raster_mode.h"
+
+#include "base/logging.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/values.h"
+
+namespace cc {
+
+scoped_ptr<base::Value> RasterModeAsValue(RasterMode raster_mode) {
+  switch (raster_mode) {
+    case HIGH_QUALITY_NO_LCD_RASTER_MODE:
+      return scoped_ptr<base::Value>(
+          base::Value::CreateStringValue("HIGH_QUALITY_NO_LCD_RASTER_MODE"));
+    case HIGH_QUALITY_RASTER_MODE:
+      return scoped_ptr<base::Value>(
+          base::Value::CreateStringValue("HIGH_QUALITY_RASTER_MODE"));
+    case LOW_QUALITY_RASTER_MODE:
+      return scoped_ptr<base::Value>(
+          base::Value::CreateStringValue("LOW_QUALITY_RASTER_MODE"));
+    case NUM_RASTER_MODES:
+    default:
+      NOTREACHED() << "Unrecognized RasterMode value " << raster_mode;
+      return scoped_ptr<base::Value>(
+          base::Value::CreateStringValue("<unknown RasterMode value>"));
+  }
+}
+
+}  // namespace cc