Delete panel metrics and define insets in terms of distance metrics.

ui/views/layout/grid_layout.cc

 // Copyright (c) 2012 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/views/layout/grid_layout.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "base/macros.h"
@@ skipping 635 matching lines @@
       adding_view_(false) {
   DCHECK(host);
 }
 
 GridLayout::~GridLayout() {
 }
 
 // static
 GridLayout* GridLayout::CreatePanel(View* host) {
   GridLayout* layout = new GridLayout(host);
-  host->SetBorder(
-      CreateEmptyBorder(LayoutProvider::Get()->GetInsetsMetric(INSETS_PANEL)));
+  host->SetBorder(CreateEmptyBorder(
+      LayoutProvider::Get()->GetInsetsMetric(INSETS_DIALOG_CONTENTS)));
   host->SetLayoutManager(layout);
   return layout;
 }
 
 ColumnSet* GridLayout::AddColumnSet(int id) {
   DCHECK(GetColumnSet(id) == nullptr);
   column_sets_.push_back(base::WrapUnique(new ColumnSet(id)));
   return column_sets_.back().get();
 }
 
@@ skipping 355 matching lines @@
 
 ColumnSet* GridLayout::GetLastValidColumnSet() {
   for (int i = current_row_ - 1; i >= 0; --i) {
     if (rows_[i]->column_set())
       return rows_[i]->column_set();
   }
   return nullptr;
 }
 
 }  // namespace views