Remove omnibox watcher.

chrome/browser/omnibox/omnibox_log.h

Index: chrome/browser/omnibox/omnibox_log.h
diff --git a/chrome/browser/omnibox/omnibox_log.h b/chrome/browser/omnibox/omnibox_log.h
index e908e4d0e960dba1850bec42d9f0d1bc9867a2bc..08216bcea7db4f5f685128e9f5dce2cc83effcca 100644
--- a/chrome/browser/omnibox/omnibox_log.h
+++ b/chrome/browser/omnibox/omnibox_log.h
@@ -26,7 +26,6 @@ struct OmniboxLog {
       bool is_popup_open,
       size_t selected_index,
       bool is_paste_and_go,
-      bool last_action_was_paste,
       SessionID::id_type tab_id,
       metrics::OmniboxEventProto::PageClassification
           current_page_classification,
@@ -57,10 +56,6 @@ struct OmniboxLog {
   // (The codebase refers to both these types as paste-and-go.)
   bool is_paste_and_go;
 
-  // True if the user's last action was a paste or if (somehow) the user is
-  // still in the act of pasting.
-  bool last_action_was_paste;
-
   // ID of the tab the selected autocomplete suggestion was opened in.
   // Set to -1 if we haven't yet determined the destination tab.
   SessionID::id_type tab_id;