ash: Refactor touch hud drawing to ash/touch_hud as a separate component.

ash/touch_hud/BUILD.gn

Index: ash/touch_hud/BUILD.gn
diff --git a/ios/public/consumer/base/BUILD.gn b/ash/touch_hud/BUILD.gn
similarity index 53%
copy from ios/public/consumer/base/BUILD.gn
copy to ash/touch_hud/BUILD.gn
index eb83ba22b1adcf0d9f15821bbf91574e002c623a..6ea67e06fb83ad63dcd20c4c2d7f5995da99110b 100644
--- a/ios/public/consumer/base/BUILD.gn
+++ b/ash/touch_hud/BUILD.gn
@@ -2,12 +2,19 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
-source_set("base") {
+import("//build/config/ui.gni")
+
+source_set("touch_hud") {
   sources = [
-    "//ios/consumer/base/debugger.mm",
-    "//ios/public/consumer/base/debugger.h",
+    "touch_hud_renderer.cc",
+    "touch_hud_renderer.h",
   ]
+
   deps = [
     "//base",
+    "//skia",
+    "//ui/events",
+    "//ui/gfx",
+    "//ui/views",
   ]
 }