Fix cc/paint skia type mismatches

ash/common/shelf/app_list_button.cc

Index: ash/common/shelf/app_list_button.cc
diff --git a/ash/common/shelf/app_list_button.cc b/ash/common/shelf/app_list_button.cc
index a2c9227ec3a6b77de89ba76dcb80c43395f81404..3630d94ef0b52ce7de6580ab358170effcfbb57f 100644
--- a/ash/common/shelf/app_list_button.cc
+++ b/ash/common/shelf/app_list_button.cc
@@ -166,7 +166,7 @@ void AppListButton::PaintMd(gfx::Canvas* canvas) {
   // Paint the circular background.
   cc::PaintFlags bg_flags;
   bg_flags.setColor(background_color_);
-  bg_flags.setFlags(cc::PaintFlags::kAntiAlias_Flag);
+  bg_flags.setAntiAlias(true);

[enne (OOO), 2017/02/27 05:20:52]

Antialiasing is the only use of setFlags, so am cleaning up the future
PaintCanvas interface here by using setAntiAlias directly instead of setFlags.

   bg_flags.setStyle(cc::PaintFlags::kFill_Style);
   canvas->DrawCircle(circle_center, kAppListButtonRadius, bg_flags);
 
@@ -179,7 +179,7 @@ void AppListButton::PaintMd(gfx::Canvas* canvas) {
   circle_center.Scale(dsf);
 
   cc::PaintFlags fg_flags;
-  fg_flags.setFlags(cc::PaintFlags::kAntiAlias_Flag);
+  fg_flags.setAntiAlias(true);
   fg_flags.setStyle(cc::PaintFlags::kStroke_Style);
   fg_flags.setColor(kShelfIconColor);
   const float thickness = std::ceil(kRingThicknessDp * dsf);