Add GetMinimumSize() for Borders, and make LabelButton auto-size to at least as

ash/wm/caption_buttons/maximize_bubble_controller_bubble.cc

 // Copyright 2013 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 "ash/wm/caption_buttons/maximize_bubble_controller_bubble.h"
 
 #include "ash/shell_delegate.h"
 #include "ash/shell_window_ids.h"
 #include "ash/wm/caption_buttons/bubble_contents_button_row.h"
 #include "ash/wm/caption_buttons/frame_maximize_button.h"
@@ skipping 129 matching lines @@
 
   virtual ~MaximizeBubbleBorder() {}
 
   // Get the mouse active area of the window.
   void GetMask(gfx::Path* mask);
 
   // views::BubbleBorder:
   virtual gfx::Rect GetBounds(const gfx::Rect& position_relative_to,
                               const gfx::Size& contents_size) const OVERRIDE;
   virtual void Paint(const views::View& view, gfx::Canvas* canvas) OVERRIDE;
+  virtual gfx::Size GetMinimumSize() const OVERRIDE;
 
  private:
   // Note: Animations can continue after then main window frame was destroyed.
   // To avoid this problem, the owning screen metrics get extracted upon
   // creation.
   gfx::Size anchor_size_;
   gfx::Point anchor_screen_origin_;
   views::View* content_view_;
 
   DISALLOW_COPY_AND_ASSIGN(MaximizeBubbleBorder);
@@ skipping 88 matching lines @@
   path.lineTo(SkIntToScalar(tip_x), SkIntToScalar(tip_y));
   path.lineTo(SkIntToScalar(left_base_x + kArrowWidth),
               SkIntToScalar(left_base_y));
 
   SkPaint paint;
   paint.setStyle(SkPaint::kFill_Style);
   paint.setColor(MaximizeBubbleControllerBubble::kBubbleBackgroundColor);
   canvas->DrawPath(path, paint);
 }
 
+gfx::Size MaximizeBubbleBorder::GetMinimumSize() const {
+  return gfx::Size(kLineWidth * 2 + kArrowWidth,
+                   std::max(kLineWidth, kArrowHeight) + kLineWidth);
+}
+
 
 // BubbleMouseWatcherHost -----------------------------------------------------
 
 // The mouse watcher host which makes sure that the bubble does not get closed
 // while the mouse cursor is over the maximize button or the balloon content.
 // Note: This object gets destroyed when the MouseWatcher gets destroyed.
 class BubbleMouseWatcherHost: public views::MouseWatcherHost {
  public:
   explicit BubbleMouseWatcherHost(MaximizeBubbleControllerBubble* bubble);
   virtual ~BubbleMouseWatcherHost();
@@ skipping 214 matching lines @@
   if (contents_view_)
     contents_view_->SetSnapType(snap_type);
 }
 
 views::CustomButton* MaximizeBubbleControllerBubble::GetButtonForUnitTest(
     SnapType state) {
   return contents_view_->GetButtonForUnitTest(state);
 }
 
 }  // namespace ash