[linux_views][Win] spoof proof redesign infobar extension with tab.

chrome/browser/ui/views/frame/browser_view_layout.cc

 // Copyright (c) 2011 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/frame/browser_view_layout.h"
 
 #include "chrome/browser/sidebar/sidebar_manager.h"
 #include "chrome/browser/ui/find_bar/find_bar.h"
 #include "chrome/browser/ui/find_bar/find_bar_controller.h"
 #include "chrome/browser/ui/view_ids.h"
@@ skipping 344 matching lines @@
   int bookmark_bar_height = active_bookmark_bar_->GetPreferredSize().height();
   y -= kSeparationLineHeight + active_bookmark_bar_->GetToolbarOverlap(false);
   active_bookmark_bar_->SetVisible(true);
   active_bookmark_bar_->SetBounds(vertical_layout_rect_.x(), y,
                                   vertical_layout_rect_.width(),
                                   bookmark_bar_height);
   return y + bookmark_bar_height;
 }
 
 int BrowserViewLayout::LayoutInfoBar(int top) {
+  // Raise the |infobar_container_| by its overlapping tab_height.
   bool visible = InfobarVisible();
-  int height = visible ? infobar_container_->GetPreferredSize().height() : 0;
   infobar_container_->SetVisible(visible);
-  infobar_container_->SetBounds(vertical_layout_rect_.x(), top,
-                                vertical_layout_rect_.width(), height);
-  return top + height;
+  int height = infobar_container_->GetPreferredSize().height();
+  DCHECK(visible || !height) << "Invisible InfoBarContainer has height.";
+  int overlapped_top = top -
+      static_cast<InfoBarContainer*>(infobar_container_)->VerticalOverlap();
+  infobar_container_->SetBounds(vertical_layout_rect_.x(),
+                                overlapped_top,
+                                vertical_layout_rect_.width(),
+                                height);
+  return overlapped_top + height;
 }
 
 // |browser_reserved_rect| is in browser_view_ coordinates.
 // |future_source_bounds| is in |source|'s parent coordinates.
 // |future_parent_offset| is required, since parent view is not moved yet.
 // Note that |future_parent_offset| is relative to browser_view_, not to
 // the parent view.
 void BrowserViewLayout::UpdateReservedContentsRect(
     const gfx::Rect& browser_reserved_rect,
     TabContentsContainer* source,
@@ skipping 134 matching lines @@
     bottom -= height;
   }
   return bottom;
 }
 
 bool BrowserViewLayout::InfobarVisible() const {
   // NOTE: Can't check if the size IsEmpty() since it's always 0-width.
   return browser()->SupportsWindowFeature(Browser::FEATURE_INFOBAR) &&
       (infobar_container_->GetPreferredSize().height() != 0);
 }