cc: Add DEFINE_ENUM macro.

cc/resources/raster_mode.h

Index: cc/resources/raster_mode.h
diff --git a/cc/resources/raster_mode.h b/cc/resources/raster_mode.h
index 9868059e0b7015c5a885ed92adc117d3e08fb176..ce3298cfe63c42fc0f624a7ee91af31c6f0d0dd9 100644
--- a/cc/resources/raster_mode.h
+++ b/cc/resources/raster_mode.h
@@ -6,6 +6,7 @@
 #define CC_RESOURCES_RASTER_MODE_H_
 
 #include "base/memory/scoped_ptr.h"
+#include "cc/base/util.h"
 
 namespace base {
 class Value;
@@ -17,13 +18,10 @@ namespace cc {
 // 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
-};
-
+DEFINE_ENUM(RasterMode,
+            HIGH_QUALITY_NO_LCD_RASTER_MODE,
+            HIGH_QUALITY_RASTER_MODE,
+            LOW_QUALITY_RASTER_MODE);
 scoped_ptr<base::Value> RasterModeAsValue(RasterMode mode);
 
 }  // namespace cc