Remove Feedv1 code

Much of this code was already compiled-out. Some exceptions:

- Code branches with if (v1 enabled) { ... } were removed.
- Extracted functions from v1 library LocateUtils class into
FeedServiceBridge.
- Some code in components/feed wasn't yet removed from
  the build, but wasn't referenced, and is now removed.
- Shared proto databases for v1 were added to
  kObsoleteSharedProtoDbTypeClients
- Obsoleted v1 specific prefs.

Bug: 1165828
Change-Id: I30bcfa7783f94f81f960a908916783e15bd98ef3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2679184
Commit-Queue: Dan H <[email protected]>
Reviewed-by: Cathy Li <[email protected]>
Reviewed-by: Mike West <[email protected]>
Reviewed-by: Ted Choc <[email protected]>
Cr-Commit-Position: refs/heads/master@{#852237}
diff --git a/components/ntp_snippets_strings.grdp b/components/ntp_snippets_strings.grdp
index 90d7754b..9a1bdba 100644
--- a/components/ntp_snippets_strings.grdp
+++ b/components/ntp_snippets_strings.grdp
@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <grit-part>
 
-  <if expr="enable_feed_v1 or is_ios">
+  <if expr="is_ios">
     <message name="IDS_NTP_TITLE_NO_SUGGESTIONS" desc="On the New Tab Page, title text explaining there is no content." formatter_data="android_java">
       That’s all for now
     </message>