[cast] Up-stream changes to *_create_sys_info target definitions.

These definitions were modified down-stream, so apply the same
changes to Chromium to keep things consistent.

Bug: b/130731732, b/132044525
Change-Id: I6afb70bafa48250faf4c5b5931dd949d838fd758
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1598873Reviewed-by: Luke Halliwell <halliwell@chromium.org>
Commit-Queue: Wez <wez@chromium.org>
Auto-Submit: Wez <wez@chromium.org>
Cr-Commit-Position: refs/heads/master@{#657664}

chromecast/base/BUILD.gn

@@ -292,7 +292,7 @@ group("default_create_sys_info") {
     public_deps = [
       ":android_create_sys_info",
     ]
-  } else if (chromecast_branding == "public" || is_fuchsia) {
+  } else if (chromecast_branding == "public") {
     public_deps = [
       ":dummy_create_sys_info",
     ]
@@ -306,9 +306,12 @@ group("default_create_sys_info") {
 # TODO(b/130731732): Remove these targets once dependents are all migrated.
 group("cast_sys_info") {
   public_deps = [
-    ":default_create_sys_info",
+    ":cast_sys_info_util",
     ":dummy_cast_sys_info",
   ]
+  if (is_android || chromecast_branding == "public") {
+    public_deps += [ ":default_create_sys_info" ]
+  }
 }
 group("cast_sys_info_shlib") {
   if (!is_android) {