Don't anti-alias clips in the Blink-replay path.

third_party/WebKit/LayoutTests/inspector/layers/layer-canvas-log-expected.txt

 
 Canvas log:
 {
     0 : {
         method : "drawRect"
         params : {
             paint : {
                 color : "#FF0000FF"
                 filterLevel : "Low"
                 flags : "AntiAlias"
@@ skipping 88 matching lines @@
     4 : {
         method : "clipRect"
         params : {
             SkRegion::Op : "kIntersect_Op"
             rect : {
                 bottom : 221
                 left : 0
                 right : 300
                 top : 71
             }
-            softClipEdgeStyle : true
+            softClipEdgeStyle : false
         }
     }
     5 : {
         method : "save"
     }
     6 : {
         method : "translate"
         params : {
             dx : 0
             dy : 71
@@ skipping 27 matching lines @@
         }
     }
     8 : {
         method : "restore"
     }
     9 : {
         method : "restore"
     }
 }