ash: Clean up naming of paint-related identifiers

ash/common/system/toast/toast_overlay.cc

Index: ash/common/system/toast/toast_overlay.cc
diff --git a/ash/common/system/toast/toast_overlay.cc b/ash/common/system/toast/toast_overlay.cc
index 4e0da1d02dec3f6ce0e774efcba3e404a186ec0a..97b620a40edf3c1f41d84cfe300af85b36605412 100644
--- a/ash/common/system/toast/toast_overlay.cc
+++ b/ash/common/system/toast/toast_overlay.cc
@@ -184,10 +184,10 @@ ToastOverlayView::ToastOverlayView(
 ToastOverlayView::~ToastOverlayView() {}
 
 void ToastOverlayView::OnPaint(gfx::Canvas* canvas) {
-  cc::PaintFlags paint;
-  paint.setStyle(cc::PaintFlags::kFill_Style);
-  paint.setColor(kButtonBackgroundColor);
-  canvas->DrawRoundRect(GetLocalBounds(), 2, paint);
+  cc::PaintFlags flags;
+  flags.setStyle(cc::PaintFlags::kFill_Style);
+  flags.setColor(kButtonBackgroundColor);
+  canvas->DrawRoundRect(GetLocalBounds(), 2, flags);
   views::View::OnPaint(canvas);
 }