roll upstream changes in third_party/metrics_proto

Change-Id: I480e436c0a9582e20ba54651fed7f4e07e052d7f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2245893Reviewed-by: Steven Holte <holte@chromium.org>
Commit-Queue: Min Qin <qinmin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#779474}

third_party/metrics_proto/README.chromium

 Name: Metrics Protos
 Short Name: metrics_proto
 URL: This is the canonical public repository
-Version: 315791570
-Date: 2020/06/10 UTC
+Version: 316750408
+Date: 2020/06/16 UTC
 License: BSD
 Security Critical: Yes
 

third_party/metrics_proto/omnibox_event.proto

@@ -14,7 +14,7 @@ package metrics;
 import "omnibox_input_type.proto";
 
 // Stores information about an omnibox interaction.
-// Next tag: 21
+// Next tag: 22
 message OmniboxEventProto {
   // The timestamp for the event, in seconds.
   // This value comes from Chromium's TimeTicks::Now(), which is an abstract
@@ -387,4 +387,8 @@ message OmniboxEventProto {
                             // or tabbing to it.
   }
   optional KeywordModeEntryMethod keyword_mode_entry_method = 20;
+
+  // Whether the omnibox input is a search query that is started
+  // by clicking on a image tile.
+  optional bool is_query_started_from_tile = 21;
 }

third_party/metrics_proto/system_profile.proto

@@ -603,7 +603,6 @@ message SystemProfileProto {
   // for this session.
   optional string variations_seed_version = 28;
 
-  // TODO(b/148689907): Deprecate this field once the analysis has been done.
   // Whether the client_id in the log matches the client_id we used to assign
   // field trials.
   optional bool client_id_was_used_for_trial_assignment = 33;