Make a copy of PageClassification enum outside the metrics code

chrome/browser/omnibox/omnibox_log.h

 // Copyright 2013 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.
 
 #ifndef CHROME_BROWSER_OMNIBOX_OMNIBOX_LOG_H_
 #define CHROME_BROWSER_OMNIBOX_OMNIBOX_LOG_H_
 
 #include <stddef.h>
 
 #include "base/strings/string16.h"
 #include "base/time/time.h"
 #include "chrome/browser/autocomplete/autocomplete_input.h"
 #include "chrome/browser/autocomplete/autocomplete_provider.h"
 #include "chrome/browser/sessions/session_id.h"
-#include "chrome/common/metrics/proto/omnibox_event.pb.h"
 
 class AutocompleteResult;
 
 // The data to log (via the metrics service) when the user selects an item from
 // the omnibox popup.
 struct OmniboxLog {
   OmniboxLog(
       const string16& text,
       bool just_deleted_text,
       AutocompleteInput::Type input_type,
       size_t selected_index,
       SessionID::id_type tab_id,
-      metrics::OmniboxEventProto::PageClassification
-          current_page_classification,
+      AutocompleteInput::PageClassification current_page_classification,
       base::TimeDelta elapsed_time_since_user_first_modified_omnibox,
       size_t completed_length,
       base::TimeDelta elapsed_time_since_last_change_to_default_match,
       const AutocompleteResult& result);
   ~OmniboxLog();
 
   // The user's input text in the omnibox.
   string16 text;
 
   // Whether the user deleted text immediately before selecting an omnibox
   // suggestion.  This is usually the result of pressing backspace or delete.
   bool just_deleted_text;
 
   // The detected type of the user's input.
   AutocompleteInput::Type input_type;
 
   // Selected index (if selected) or -1 (OmniboxPopupModel::kNoMatch).
   size_t selected_index;
 
   // 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;
 
   // The type of page (e.g., new tab page, regular web page) that the
   // user was viewing before going somewhere with the omnibox.
-  metrics::OmniboxEventProto::PageClassification current_page_classification;
+  AutocompleteInput::PageClassification current_page_classification;
 
   // The amount of time since the user first began modifying the text
   // in the omnibox.  If at some point after modifying the text, the
   // user reverts the modifications (thus seeing the current web
   // page's URL again), then writes in the omnibox again, this time
   // delta should be computed starting from the second series of
   // modifications.  If we somehow skipped the logic to record
   // the time the user began typing (this should only happen in
   // unit tests), this elapsed time is set to -1 milliseconds.
   base::TimeDelta elapsed_time_since_user_first_modified_omnibox;
@@ skipping 11 matching lines @@
   // Result set.
   const AutocompleteResult& result;
 
   // Diagnostic information from providers.  See
   // AutocompleteController::AddProvidersInfo() and
   // AutocompleteProvider::AddProviderInfo() above.
   ProvidersInfo providers_info;
 };
 
 #endif  // CHROME_BROWSER_OMNIBOX_OMNIBOX_LOG_H_