Updates to clean up default theme and add hover states

chrome/browser/cocoa/download_item_cell.mm

 // Copyright (c) 2009 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.
 
 #import "chrome/browser/cocoa/download_item_cell.h"
 
 #include "app/gfx/canvas_paint.h"
 #include "app/gfx/text_elider.h"
 #include "app/l10n_util.h"
 #include "base/mac_util.h"
@@ skipping 315 matching lines @@
       rightRoundedPath:radius inRect:dropdownDrawRect];
   NSBezierPath* dropdownOuterPath = [self
       rightRoundedPath:(radius + 1)
                 inRect:NSInsetRect(dropdownDrawRect, -1, -1)];
 
   // Stroke the borders and appropriate fill gradient.
   [self drawBorderAndFillForTheme:theme
                       controlView:controlView
                         outerPath:buttonOuterPath
                         innerPath:buttonInnerPath
+              showClickedGradient:[self isButtonPartPressed]
             showHighlightGradient:[self isMouseOverButtonPart]
-              showClickedGradient:[self isButtonPartPressed]
+                       hoverAlpha:0.0
                            active:active
                         cellFrame:cellFrame];
 
   [self drawBorderAndFillForTheme: theme
                       controlView:controlView
                         outerPath:dropdownOuterPath
                         innerPath:dropdownInnerPath
+              showClickedGradient:[self isDropdownPartPressed]
             showHighlightGradient:[self isMouseOverDropdownPart]
-              showClickedGradient:[self isDropdownPartPressed]
+                       hoverAlpha:0.0
                            active:active
                         cellFrame:cellFrame];
 
   [self drawInteriorWithFrame:innerFrame inView:controlView];
 }
 
 - (void)drawInteriorWithFrame:(NSRect)cellFrame inView:(NSView*)controlView {
   // Draw title
   [self elideTitle:cellFrame.size.width -
       (kTextPosLeft + kTextPaddingRight + kDropdownAreaWidth)];
@@ skipping 148 matching lines @@
   }
   return self;
 }
 
 - (void)setCurrentProgress:(NSAnimationProgress)progress {
   [super setCurrentProgress:progress];
   [cell_ animation:self progressed:progress];
 }
 
 @end