Linux Aura: Added --use-system-title-bar flag.

chrome/browser/ui/views/frame/opaque_browser_frame_view_layout.h

 // 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.
 
 #ifndef CHROME_BROWSER_UI_VIEWS_FRAME_OPAQUE_BROWSER_FRAME_VIEW_LAYOUT_H_
 #define CHROME_BROWSER_UI_VIEWS_FRAME_OPAQUE_BROWSER_FRAME_VIEW_LAYOUT_H_
 
 #include "chrome/browser/ui/views/frame/opaque_browser_frame_view.h"
 #include "ui/views/layout/layout_manager.h"
 #include "ui/views/window/frame_buttons.h"
@@ skipping 74 matching lines @@
   void set_extra_caption_y(int extra_caption_y) {
     extra_caption_y_ = extra_caption_y;
   }
 
   void set_window_caption_spacing(int window_caption_spacing) {
     window_caption_spacing_ = window_caption_spacing;
   }
 
   const gfx::Rect& client_view_bounds() const { return client_view_bounds_; }
 
+  // Determines whether the title bar is condensed vertically, as when the
+  // window is maximized. If true, the title bar is just the height of a tab,
+  // rather than having extra vertical space above the tabs. This also removes
+  // the thick frame border and rounded corners.

[James Cook, 2013/12/19 20:57:55]

Nice comment, very helpful to readers.

+  bool IsTitleBarCondensed() const;
+
  private:
   // Whether a specific button should be inserted on the leading or trailing
   // side.
   enum ButtonAlignment {
     ALIGN_LEADING,
     ALIGN_TRAILING
   };
 
   // Determines whether the avatar should be shown on the right side of the tab
   // strip (instead of the usual left).
@@ skipping 73 matching lines @@
   AvatarMenuButton* avatar_button_;
   views::View* new_avatar_button_;
 
   std::vector<views::FrameButton> leading_buttons_;
   std::vector<views::FrameButton> trailing_buttons_;
 
   DISALLOW_COPY_AND_ASSIGN(OpaqueBrowserFrameViewLayout);
 };
 
 #endif  // CHROME_BROWSER_UI_VIEWS_FRAME_OPAQUE_BROWSER_FRAME_VIEW_LAYOUT_H_