[Omnibox] Elide omnibox text

ui/gfx/render_text_harfbuzz.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.
 
 #include "ui/gfx/render_text_harfbuzz.h"
 
 #include <limits>
 #include <set>
 
 #include "base/i18n/bidi_line_iterator.h"
@@ skipping 1184 matching lines @@
 
       ItemizeTextToRuns(display_text, display_run_list_.get());
 
       // TODO(ckocagil): Remove ScopedTracker below once crbug.com/441028 is
       // fixed.
       tracked_objects::ScopedTracker tracking_profile(
           FROM_HERE_WITH_EXPLICIT_FUNCTION("441028 ShapeRunList() 1"));
       ShapeRunList(display_text, display_run_list_.get());
     }
     update_display_run_list_ = false;
-
     std::vector<internal::Line> empty_lines;
     set_lines(&empty_lines);
   }
 
   if (lines().empty()) {
     // TODO(ckocagil): Remove ScopedTracker below once crbug.com/441028 is
     // fixed.
     std::unique_ptr<tracked_objects::ScopedTracker> tracking_profile(
         new tracked_objects::ScopedTracker(
             FROM_HERE_WITH_EXPLICIT_FUNCTION("441028 HarfBuzzLineBreaker")));
@@ skipping 425 matching lines @@
       TRACE_EVENT0("ui", "RenderTextHarfBuzz:EnsureLayoutRunList");
       ItemizeTextToRuns(text, &layout_run_list_);
 
       // TODO(ckocagil): Remove ScopedTracker below once crbug.com/441028 is
       // fixed.
       tracked_objects::ScopedTracker tracking_profile(
           FROM_HERE_WITH_EXPLICIT_FUNCTION("441028 ShapeRunList() 2"));
       ShapeRunList(text, &layout_run_list_);
     }
 
-    std::vector<internal::Line> empty_lines;
-    set_lines(&empty_lines);
     display_run_list_.reset();
     update_display_text_ = true;
     update_layout_run_list_ = false;
   }
   if (update_display_text_) {
+    std::vector<internal::Line> empty_lines;
+    set_lines(&empty_lines);
     UpdateDisplayText(multiline() ? 0 : layout_run_list_.width());
     update_display_text_ = false;
     update_display_run_list_ = text_elided();
   }
 }
 
 internal::TextRunList* RenderTextHarfBuzz::GetRunList() {
   DCHECK(!update_layout_run_list_);
   DCHECK(!update_display_run_list_);
   return text_elided() ? display_run_list_.get() : &layout_run_list_;
@@ skipping 36 matching lines @@
 
       attribute.strike = run.strike;
       attribute.diagonal_strike = run.diagonal_strike;
       decorated_text->attributes.push_back(attribute);
     }
   }
   return true;
 }
 
 }  // namespace gfx