Use buttons from DialogClientView in BookmakBubbleView.

ui/views/bubble/bubble_dialog_delegate.h

 // Copyright 2016 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.
 
 #ifndef UI_VIEWS_BUBBLE_BUBBLE_DIALOG_DELEGATE_H_
 #define UI_VIEWS_BUBBLE_BUBBLE_DIALOG_DELEGATE_H_
 
 #include "base/gtest_prod_util.h"
 #include "base/macros.h"
 #include "ui/views/bubble/bubble_border.h"
@@ skipping 126 matching lines @@
   // Perform view initialization on the contents for bubble sizing.
   virtual void Init();
 
   // Sets the anchor view or rect and repositions the bubble. Note that if a
   // valid view gets passed, the anchor rect will get ignored. If the view gets
   // deleted, but no new view gets set, the last known anchor postion will get
   // returned.
   void SetAnchorView(View* anchor_view);
   void SetAnchorRect(const gfx::Rect& rect);
 
+  void set_button_row_insets(const gfx::Insets& insets) {
+    button_row_insets_ = insets;
+  }
+
   // Resize and potentially move the bubble to fit the content's preferred size.
   void SizeToContents();
 
   BubbleFrameView* GetBubbleFrameView() const;
 
  private:
   friend class BubbleBorderDelegate;
   friend class BubbleWindowTargeter;
 
   FRIEND_TEST_ALL_PREFIXES(BubbleDelegateTest, CreateDelegate);
@@ skipping 23 matching lines @@
   // Automatically mirror the arrow in RTL layout.
   bool mirror_arrow_in_rtl_;
 
   // Bubble border shadow to use.
   BubbleBorder::Shadow shadow_;
 
   // The background color of the bubble; and flag for when it's explicitly set.
   SkColor color_;
   bool color_explicitly_set_;
 
-  // The margins between the content and the inside of the border.
+  // The margins between the content (including buttons) and the inside of the
+  // border.
   gfx::Insets margins_;
 
   // The margins around the title.
   // TODO(tapted): Investigate deleting this when MD is default.
   gfx::Insets title_margins_;
 
   // Insets applied to the |anchor_view_| bounds.
   gfx::Insets anchor_view_insets_;
 
+  // Insets around the button row (when buttons are present). Note that bottom
+  // and side insets from |margins_| are already added around the button row.
+  gfx::Insets button_row_insets_;
+
   // Specifies whether the bubble (or its border) handles mouse events, etc.
   bool accept_events_;
 
   // If true (defaults to true), the arrow may be mirrored and moved to fit the
   // bubble on screen better. It would be a no-op if the bubble has no arrow.
   bool adjust_if_offscreen_;
 
   // Parent native window of the bubble.
   gfx::NativeView parent_window_;
 
   DISALLOW_COPY_AND_ASSIGN(BubbleDialogDelegateView);
 };
 
 }  // namespace views
 
 #endif  // UI_VIEWS_BUBBLE_BUBBLE_DELEGATE2_H_