Classify navigations without page id in parallel to the existing classifier.

content/browser/frame_host/navigation_entry_impl.cc

 // 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.
 
 #include "content/browser/frame_host/navigation_entry_impl.h"
 
 #include "base/metrics/histogram.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "content/common/navigation_params.h"
@@ skipping 427 matching lines @@
     // Set the history list related parameters to the same values a
     // NavigationController would return before its first navigation. This will
     // fully clear the RenderView's view of the session history.
     pending_offset_to_send = -1;
     current_offset_to_send = -1;
     current_length_to_send = 0;
   }
   return RequestNavigationParams(
       GetIsOverridingUserAgent(), navigation_start, redirects,
       GetCanLoadLocalResources(), GetFrameToNavigate(), base::Time::Now(),
-      GetPageState(), GetPageID(), pending_offset_to_send,
+      GetPageState(), GetPageID(), GetUniqueID(), pending_offset_to_send,
       current_offset_to_send, current_length_to_send,
       should_clear_history_list());
 }
 
 void NavigationEntryImpl::ResetForCommit() {
   // Any state that only matters when a navigation entry is pending should be
   // cleared here.
   // TODO(creis): This state should be moved to NavigationRequest once
   // PlzNavigate is enabled.
   SetBrowserInitiatedPostData(nullptr);
@@ skipping 29 matching lines @@
   screenshot_ = png_data;
   if (screenshot_.get())
     UMA_HISTOGRAM_MEMORY_KB("Overscroll.ScreenshotSize", screenshot_->size());
 }
 
 GURL NavigationEntryImpl::GetHistoryURLForDataURL() const {
   return GetBaseURLForDataURL().is_empty() ? GURL() : GetVirtualURL();
 }
 
 }  // namespace content