PlzNavigate: Move navigation-level mixed content checks to the browser.

chrome/browser/metrics/first_web_contents_profiler.cc

 // Copyright 2014 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.
 
 #if !defined(OS_ANDROID)
 
 #include "chrome/browser/metrics/first_web_contents_profiler.h"
 
 #include <string>
 
@@ skipping 69 matching lines @@
 
 void FirstWebContentsProfiler::DidStartNavigation(
     content::NavigationHandle* navigation_handle) {
   if (collected_main_navigation_start_metric_)
     return;
   if (startup_metric_utils::WasNonBrowserUIDisplayed()) {
     FinishedCollectingMetrics(FinishReason::ABANDON_BLOCKING_UI);
     return;
   }
 
+  // TODO(carlosk): this DCHECK is hit when PlzNavigate is enabled. See
+  // crbug.com/610771.
   // The first navigation has to be the main frame's.
   DCHECK(navigation_handle->IsInMainFrame());
 
   collected_main_navigation_start_metric_ = true;
   startup_metric_utils::RecordFirstWebContentsMainNavigationStart(
       base::TimeTicks::Now());
 }
 
 void FirstWebContentsProfiler::DidFinishNavigation(
     content::NavigationHandle* navigation_handle) {
@@ skipping 55 matching lines @@
   }
   if (!collected_load_metric_) {
     UMA_HISTOGRAM_ENUMERATION("Startup.FirstWebContents.FinishReason_NoLoad",
                               finish_reason, FinishReason::ENUM_MAX);
   }
 
   delete this;
 }
 
 #endif  // !defined(OS_ANDROID)