cc: Toggle LCD text at raster time instead of record time.

cc/resources/raster_source.h

Index: cc/resources/raster_source.h
diff --git a/cc/resources/raster_source.h b/cc/resources/raster_source.h
index 5f200dbf76e959f01b9047e86a2b23a727c42fc5..3584436469571604f463766d88ff9060c71a132b 100644
--- a/cc/resources/raster_source.h
+++ b/cc/resources/raster_source.h
@@ -93,6 +93,9 @@ class CC_EXPORT RasterSource : public base::RefCountedThreadSafe<RasterSource> {
   virtual void AsValueInto(base::debug::TracedValue* array) const = 0;
   virtual skia::RefPtr<SkPicture> GetFlattenedPicture() = 0;
 
+  // Return true if LCD anti-aliasing may be used when rastering text.
+  virtual bool CanUseLCDText() const = 0;
+
  protected:
   friend class base::RefCountedThreadSafe<RasterSource>;