chromeos: Clean up cc/paint DEPS in ash

gfx::Canvas has DrawCircle etc. functions that take cc paint flags.
These functions are used for painting in a few places in ash.
ash already has a build-time dependency on //cc/paint.
Just allow cc/paint deps in ash.

Bug: none
Test: checkdeps
Change-Id: I7ddd8dc9cb43d0ab73b4b4435678ae87e3259c67
Reviewed-on: https://chromium-review.googlesource.com/1238447Reviewed-by: Fady Samuel <fsamuel@chromium.org>
Commit-Queue: James Cook <jamescook@chromium.org>
Cr-Commit-Position: refs/heads/master@{#593290}

ash/DEPS

@@ -3,6 +3,7 @@ include_rules = [
   "+device/bluetooth",
   "+cc/debug",
   "+cc/output",
+  "+cc/paint",
   "+chromeos/cryptohome",
   "+components/account_id",
   "+components/discardable_memory/public",

ash/assistant/ui/logo_view/DEPS

 include_rules = [
   "+chromeos/assistant",
-  "+cc/paint/paint_flags.h",
 ]

ash/components/cursor/DEPS

 include_rules = [
   "+ash/components/fast_ink",
   "+base",
-  "+cc/paint",
   "+components/viz/common",
   "+ui/aura",
   "+ui/events",

ash/display/DEPS

 include_rules = [
   "+ash/host",
-  "+cc/paint",
 ]
 
 specific_include_rules = {