Add missing public_deps for //content/public/app:xxx GN targets.

content/public/app/BUILD.gn

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # App different than the regular content subcomponents (see comments in
 # //content/BUILD.gn) because it has to support the browser/child process split
 # (the "both" target include both browser and child process files and is used
 # for testing).
 #
 # In non-component mode, browser, child, and both all follow the same structure:
@@ skipping 41 matching lines @@
     configs += [ "//content:content_implementation" ]
 
     deps = public_app_shared_deps + [
              "//content/app:both",
              "//content/public/browser:browser_sources",
            ]
   }
 
   # These all just forward to content, which in turn depends on "both_sources".
   group("browser") {
-    deps = [
+    public_deps = [
       "//content",
     ]
   }
   group("child") {
-    deps = [
+    public_deps = [
       "//content",
     ]
   }
   group("both") {
-    deps = [
+    public_deps = [
       "//content",
     ]
   }
 } else {
   # content_main_delegate.cc conditionally includes content_browser_client.h
   # from //content/public/browser when it's not the child build. However,
   # the header checker doesn't know this doesn't apply and throws an error.
   # So all of these targets set check_includes = false.
   #
   # TODO(brettw) either teach the header checker to understand simple
@@ skipping 71 matching lines @@
     "//media/mojo/services:media_manifest",
     "//services/user:manifest",
   ]
 }
 
 mojo_application_manifest("renderer_manifest") {
   type = "exe"
   application_name = "content_renderer"
   source = "mojo/content_renderer_manifest.json"
 }