[Media Controls] Rename 'non_touch' to 'touchless'

Fix 2 instances of MediaControlsNonTouchImpl that should have been
renamed to MediaControlsTouchlessImpl in http://crrev.com/c/1540290

Bug: 946985
TBR: jazzhsu@chromium.org
Change-Id: Id1d18471c95630802307ff918e5905b429e9540d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1543392Reviewed-by: Tobias Sargeant <tobiasjs@chromium.org>
Commit-Queue: Tobias Sargeant <tobiasjs@chromium.org>
Cr-Commit-Position: refs/heads/master@{#645295}

third_party/blink/renderer/modules/media_controls/touchless/media_controls_touchless_impl.cc

@@ -180,7 +180,7 @@ void MediaControlsTouchlessImpl::EnsureMediaControlsMenuHost() {
                           GetExecutionContext()->GetTaskRunner(
                               blink::TaskType::kMediaElementEvent)));
     media_controls_host_.set_connection_error_handler(WTF::Bind(
-        &MediaControlsNonTouchImpl::OnMediaControlsMenuHostConnectionError,
+        &MediaControlsTouchlessImpl::OnMediaControlsMenuHostConnectionError,
         WrapWeakPersistent(this)));
   }
 }
@@ -242,7 +242,7 @@ void MediaControlsTouchlessImpl::ShowContextMenu() {
 
   media_controls_host_->ShowMediaMenu(
       std::move(menu_items), std::move(video_state), std::move(text_tracks),
-      WTF::Bind(&MediaControlsNonTouchImpl::OnMediaMenuResult,
+      WTF::Bind(&MediaControlsTouchlessImpl::OnMediaMenuResult,
                 WrapWeakPersistent(this)));
 }