[GRIT] Fix resource_ids for sample_system_web_app_resources.grd.

This CL fixes resource_ids entry sample_system_web_app_resources.grd,
which was added in:

https://chromium-review.googlesource.com/c/chromium/src/+/1956978

The new GRD (B) displaced an entry (C) that has META "join" for mutually
exclusive entries (A1 and A2). This causes the following sub-graph
change:

  A1 <-- C     ===>    A1 <-------- C
  A2 <---+             A2 <-- B <---+

This caused A1 to collide with B when GRIT update_resource_ids runs. The
problem was mitigated in

https://chromium-review.googlesource.com/c/chromium/src/+/1980336

by swapping A1 and A2. However, the proper fix (implemented by this CL)
is to move META "join" from C to B, so the sub-graph becomes:

  A1 <-- B <--- C
  A2 <---+

This CL also reserves more ID space for media_app_bundle_resources.grd
(A1) to accommodate potential growth.

Change-Id: I891b643192ef49699397b8376e4fec03e66f2f49
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1980802Reviewed-by: Andrew Grieve <agrieve@chromium.org>
Commit-Queue: Samuel Huang <huangs@chromium.org>
Cr-Commit-Position: refs/heads/master@{#727198}

tools/gritsettings/resource_ids

@@ -181,15 +181,15 @@
     "structures": [11170],
   },
   "chrome/browser/resources/tab_strip/tab_strip_resources.grd": {
-    "structures": [11610],
-    "includes": [11630],
+    "structures": [11620],
+    "includes": [11640],
   },
   "chrome/browser/resources/welcome/welcome_resources.grd": {
-    "includes": [11650],
-    "structures": [11680],
+    "includes": [11660],
+    "structures": [11690],
   },
   "chrome/browser/vr/testapp/vr_testapp_resources.grd": {
-    "includes": [11700],
+    "includes": [11710],
   },
   # END chrome/browser section.
 
@@ -287,19 +287,19 @@
   # start with the same id because only one of them is built depending on if
   # src_internal is available. Lower bound for number of resource ids is number
   # of languages (74).
-  "chromeos/components/media_app_ui/resources/mock/media_app_bundle_mock_resources.grd": {
+  "chromeos/components/media_app_ui/resources/app/app/media_app_bundle_resources.grd": {
+    "META": {"sizes": {"includes": [120],}},  # Relies on src-internal.
     "includes": [12390],
   },
-  "chromeos/components/media_app_ui/resources/app/app/media_app_bundle_resources.grd": {
-    "META": {"sizes": {"includes": [100],}},  # Relies on src-internal.
+  "chromeos/components/media_app_ui/resources/mock/media_app_bundle_mock_resources.grd": {
     "includes": [12390],
   },
   "chromeos/components/sample_system_web_app_ui/resources/sample_system_web_app_resources.grd": {
-    "includes": [12510],
+    "META": {"join": 2},
+    "includes": [12530],
   },
   "chromeos/resources/chromeos_resources.grd": {
-    "META": {"join": 2},
-    "includes": [12520],
+    "includes": [12540],
   },
   # END chromeos/ section.