highlight intermediate tabs

chrome/browser/ui/views/tabs/tab.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/tabs/tab.h"
 
 #include <limits>
 
 #include "base/command_line.h"
 #include "base/debug/alias.h"
@@ skipping 932 matching lines @@
     controller()->SelectTab(this);
   }
 }
 
 void Tab::OnMouseCaptureLost() {
   if (controller())
     controller()->EndDrag(END_DRAG_CAPTURE_LOST);
 }
 
 void Tab::OnMouseEntered(const ui::MouseEvent& event) {
-  hover_controller_.Show();
+  hover_controller_.Show(views::GlowHoverController::SUBTLE);
 }
 
 void Tab::OnMouseMoved(const ui::MouseEvent& event) {
   hover_controller_.SetLocation(event.location());
   if (controller())
     controller()->OnMouseEventInTab(this, event);
 }
 
 void Tab::OnMouseExited(const ui::MouseEvent& event) {
   hover_controller_.Hide();
@@ skipping 678 matching lines @@
                          const gfx::ImageSkia& image) {
   DCHECK_NE(scale_factor, ui::SCALE_FACTOR_NONE);
   ImageCacheEntry entry;
   entry.resource_id = resource_id;
   entry.scale_factor = scale_factor;
   entry.image = image;
   image_cache_->push_front(entry);
   if (image_cache_->size() > kMaxImageCacheSize)
     image_cache_->pop_back();
 }