Fix Harmony popover buttons being flush with their content.

chrome/browser/ui/views/bookmarks/bookmark_bubble_view.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 "chrome/browser/ui/views/bookmarks/bookmark_bubble_view.h"
 
 #include "base/metrics/user_metrics.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/bookmarks/bookmark_model_factory.h"
@@ skipping 319 matching lines @@
   views::Label* combobox_label = new views::Label(
       l10n_util::GetStringUTF16(IDS_BOOKMARK_BUBBLE_FOLDER_LABEL));
   layout->AddView(combobox_label);
 
   parent_combobox_ = new UnsizedCombobox(&parent_model_);
   parent_combobox_->set_listener(this);
   parent_combobox_->SetAccessibleName(
       l10n_util::GetStringUTF16(IDS_BOOKMARK_AX_BUBBLE_FOLDER_LABEL));
   layout->AddView(parent_combobox_);
 
-  layout->AddPaddingRow(
-      kFixed,
-      provider->GetInsetsMetric(views::INSETS_DIALOG_CONTENTS).bottom());
+  if (provider->UseExtraDialogPadding()) {

[Bret, 2017/06/07 22:52:18]

This is redundant post-Harmony with the new padding in BubbleDialogDelegateView.

+    layout->AddPaddingRow(
+        kFixed,
+        provider->GetInsetsMetric(views::INSETS_DIALOG_CONTENTS).bottom());
+  }
 
   AddChildView(bookmark_contents_view_);
 }
 
 // Private methods -------------------------------------------------------------
 
 BookmarkBubbleView::BookmarkBubbleView(
     views::View* anchor_view,
     bookmarks::BookmarkBubbleObserver* observer,
     std::unique_ptr<BubbleSyncPromoDelegate> delegate,
@@ skipping 82 matching lines @@
   footnote_view_ = nullptr;
   is_showing_ios_promotion_ = true;
   ios_promo_view_ = new DesktopIOSPromotionBubbleView(profile_, entry_point);
   AddChildView(ios_promo_view_);
   GetWidget()->UpdateWindowIcon();
   GetWidget()->UpdateWindowTitle();
   GetDialogClientView()->UpdateDialogButtons();
   SizeToContents();
 }
 #endif