chromeos: Rename "touch_hud" mojo app to "tap_visualizer"

It implements the "Show Taps" UI feature and is turned on via the flag
--show-taps, so use a name with "taps" in it.

Bug: 840380
Test: compiles, ash_unittests
Change-Id: I84784115cb7ba26bfcac8c28db293df62b95ebf5
Reviewed-on: https://chromium-review.googlesource.com/1067851
Reviewed-by: Daniel Cheng <[email protected]>
Reviewed-by: James Cook <[email protected]>
Reviewed-by: Scott Violet <[email protected]>
Commit-Queue: James Cook <[email protected]>
Cr-Commit-Position: refs/heads/master@{#560907}
diff --git a/chrome/browser/about_flags.cc b/chrome/browser/about_flags.cc
index 2149e4c..f758e9a4 100644
--- a/chrome/browser/about_flags.cc
+++ b/chrome/browser/about_flags.cc
@@ -3882,9 +3882,9 @@
      FEATURE_VALUE_TYPE(features::kDisallowUnsafeHttpDownloads)},
 
 #if defined(OS_CHROMEOS)
-    {"show-taps-app", flag_descriptions::kShowTapsAppName,
-     flag_descriptions::kShowTapsAppDescription, kOsCrOS,
-     FEATURE_VALUE_TYPE(ash::features::kShowTapsApp)},
+    {"tap-visualizer-app", flag_descriptions::kTapVisualizerAppName,
+     flag_descriptions::kTapVisualizerAppDescription, kOsCrOS,
+     FEATURE_VALUE_TYPE(ash::features::kTapVisualizerApp)},
 #endif
 
     {"enable-websocket-auth-connection-reuse",