Moving HelpApp to src from src-internal

Follow adapted version of: crbug/1051776
as migration plan:
Step 1: (This CL)
- add .gitignore entry for new path
- add entry to src/DEPS for HelpApp
- point references to app to the new entry

Step 2: (CL internal: https://chrome-internal-review.googlesource.com/c/chrome/src-internal/+/2967280)
- remove entry for app in src-internal/DEPS

Cq-Include-Trybots: chrome/try:linux-chromeos-chrome
Change-Id: Iea0ccd46670f91824fc4c95ceb630c4bc7af791f
Bug: 1080474
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2182702
Commit-Queue: Jose Magana <jomag@chromium.org>
Reviewed-by: Trent Apted <tapted@chromium.org>
Reviewed-by: Yaron Friedman <yfriedman@chromium.org>
Reviewed-by: Rachel Carpenter <carpenterr@chromium.org>
Reviewed-by: Michael Moss <mmoss@chromium.org>
Cr-Commit-Position: refs/heads/master@{#768559}

.gitignore

@@ -174,6 +174,7 @@ vs-chromium-project.txt
 /chromecast/internal
 /chromeos/assistant/internal
 /chromeos/components/help_app_ui/resources/app
+/chromeos/components/help_app_ui/resources/prod
 /chromeos/components/media_app_ui/resources/app
 /chromeos/components/media_app_ui/resources/pkg
 /chromeos/profiles/chromeos.orderfile.txt

DEPS

@@ -1529,6 +1529,17 @@ deps = {
     'condition': 'checkout_src_internal',
   },
 
+  'src/chromeos/components/help_app_ui/resources/prod': {
+    'packages': [
+      {
+        'package': 'chromeos_internal/apps/help_app/app',
+        'version': '4LNO2QORJBlLuLF5s9dotu4sFJmSIF4tM_K_Xa7AxcIC',
+      },
+    ],
+    'condition': 'checkout_chromeos and checkout_src_internal',
+    'dep_type': 'cipd',
+  },
+
   'src/third_party/google_android_play_core': {
       'packages': [
           {

chromeos/resources/BUILD.gn

@@ -64,9 +64,9 @@ grit("help_app_resources") {
 # Resources automatically served by the chrome://help-app bundle, obtained via DEPS.
 grit("help_app_bundle_resources") {
   if (enable_cros_help_app) {
-    # Obtained via src-internal/DEPS.
+    # Obtained via an internal CIPD package in src/DEPS.
     source =
-        "../components/help_app_ui/resources/app/help_app_bundle_resources.grd"
+        "../components/help_app_ui/resources/prod/help_app_bundle_resources.grd"
   } else {
     source = "../components/help_app_ui/resources/mock/help_app_bundle_mock_resources.grd"
   }

tools/gritsettings/resource_ids.spec

@@ -289,7 +289,7 @@
   # src_internal is available. Lower bound is that we bundle ~100 images for
   # offline articles with the app, as well as strings in every language (74),
   # and bundled content in the top 25 languages (25 x 2).
-  "chromeos/components/help_app_ui/resources/app/help_app_bundle_resources.grd": {
+  "chromeos/components/help_app_ui/resources/prod/help_app_bundle_resources.grd": {
     "META": {"sizes": {"includes": [300],}},  # Relies on src-internal.
     "includes": [2540],
   },