Tighten DEPS allowances on //services in //ios

Several DEPS entries were allowing dependencies on the internals of a
service. This CL tightens those DEPS down. Note that a couple are left:
this is intentional, as in those cases the services in question are
actually being embedded in the dependent.

Cq-Include-Trybots: master.tryserver.chromium.mac:ios-simulator-cronet;master.tryserver.chromium.mac:ios-simulator-full-configs
Change-Id: I7e91f08559399997059c4c81dd7857e19c776175
Reviewed-on: https://chromium-review.googlesource.com/776695Reviewed-by: Sylvain Defresne <sdefresne@chromium.org>
Commit-Queue: Colin Blundell <blundell@chromium.org>
Cr-Commit-Position: refs/heads/master@{#517422}

ios/chrome/browser/DEPS

@@ -101,8 +101,8 @@ include_rules = [
   "+libxml/xmlwriter.h",
   "+net",
   "+rlz/features",
-  "+services/metrics",
-  "+services/service_manager",
+  "+services/metrics/public",
+  "+services/service_manager/public",
   "+third_party/breakpad/breakpad/src/client/ios",
   "+third_party/breakpad/breakpad/src/common",
   "+third_party/brotli",

ios/chrome/browser/ui/webui/DEPS

 include_rules = [
   "+mojo/public",
-  "+services/service_manager/public",
 ]

ios/web/DEPS

@@ -5,8 +5,8 @@ include_rules = [
   "+ios/web",
   "+mojo/public",
   "+net",
-  "+services/catalog",
-  "+services/service_manager",
+  "+services/catalog/public",
+  "+services/service_manager/public",
   "+ui",
 
   # For tests.

ios/web/webui/DEPS

 include_rules = [
   "+mojo/public",
-  "+services/service_manager/public",
   "+ui/resources/grit",
 ]