Reduce string copies in GURL creation

components/web_view/frame.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/web_view/frame.h"
 
 #include <stddef.h>
 #include <algorithm>
 #include <utility>
 
@@ skipping 344 matching lines @@
   if (!window_) {
     pending_navigate_ = std::move(request);
     return;
   }
 
   // Drop any pending navigation requests.
   navigate_weak_ptr_factory_.InvalidateWeakPtrs();
 
   DVLOG(2) << "Frame::StartNavigate id=" << id_ << " url=" << request->url;
 
-  const GURL requested_url(request->url);
+  const GURL requested_url(request->url.get());
   base::TimeTicks navigation_start_time =
       base::TimeTicks::FromInternalValue(request->originating_time_ticks);
   tree_->delegate_->CanNavigateFrame(
       this, std::move(request),
       base::Bind(&Frame::OnCanNavigateFrame,
                  navigate_weak_ptr_factory_.GetWeakPtr(), requested_url,
                  navigation_start_time));
 }
 
 void Frame::OnCanNavigateFrame(
@@ skipping 224 matching lines @@
                                               final_update);
 }
 
 void Frame::OnFindInPageSelectionUpdated(int32_t request_id,
                                          int32_t active_match_ordinal) {
   tree_->delegate_->OnFindInPageSelectionUpdated(request_id, this,
                                                  active_match_ordinal);
 }
 
 }  // namespace web_view