Move implementation of WebFilterOperations into cc

cc/trees/damage_tracker.h

Index: cc/trees/damage_tracker.h
diff --git a/cc/trees/damage_tracker.h b/cc/trees/damage_tracker.h
index 716e573224ee73b466433c47f5cc7c329bc8619a..ce72fcc842cf7a57d63f58577c0fceee692d28e7 100644
--- a/cc/trees/damage_tracker.h
+++ b/cc/trees/damage_tracker.h
@@ -18,12 +18,9 @@ namespace gfx {
 class Rect;
 }
 
-namespace WebKit {
-class WebFilterOperations;
-}
-
 namespace cc {
 
+class FilterOperations;
 class LayerImpl;
 class RenderSurfaceImpl;
 
@@ -43,7 +40,7 @@ class CC_EXPORT DamageTracker {
       bool target_surface_property_changed_only_from_descendant,
       gfx::Rect target_surface_content_rect,
       LayerImpl* target_surface_mask_layer,
-      const WebKit::WebFilterOperations& filters,
+      const FilterOperations& filters,
       SkImageFilter* filter);
 
   gfx::RectF current_damage_rect() { return current_damage_rect_; }