Stop tracking user input events without a relevant load.

components/page_load_metrics/browser/metrics_web_contents_observer.cc

 // Copyright 2015 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 "components/page_load_metrics/browser/metrics_web_contents_observer.h"
 
 #include <algorithm>
 #include <ostream>
 #include <string>
 #include <utility>
@@ skipping 768 matching lines @@
 void MetricsWebContentsObserver::NavigationStopped() {
   NotifyAbortAllLoads(ABORT_STOP);
 }
 
 void MetricsWebContentsObserver::OnInputEvent(
     const blink::WebInputEvent& event) {
   // Ignore browser navigation or reload which comes with type Undefined.
   if (event.type == blink::WebInputEvent::Type::Undefined)
     return;
 
-  if (!committed_load_) {
-    RecordInternalError(ERR_USER_INPUT_WITH_NO_RELEVANT_LOAD);
-    return;
-  }
-
-  committed_load_->OnInputEvent(event);
+  if (committed_load_)
+    committed_load_->OnInputEvent(event);
 }
 
 void MetricsWebContentsObserver::DidRedirectNavigation(
     content::NavigationHandle* navigation_handle) {
   if (!navigation_handle->IsInMainFrame())
     return;
   auto it = provisional_loads_.find(navigation_handle);
   if (it == provisional_loads_.end())
     return;
   it->second->Redirect(navigation_handle);
@@ skipping 118 matching lines @@
 
   if (!committed_load_->UpdateTiming(timing, metadata)) {
     // If the page load tracker cannot update its timing, something is wrong
     // with the IPC (it's from another load, or it's invalid in some other way).
     // We expect this to be a rare occurrence.
     RecordInternalError(ERR_BAD_TIMING_IPC);
   }
 }
 
 }  // namespace page_load_metrics