[MD] replace infobar bottom solid line separator with a shadow.

chrome/browser/ui/views/infobars/infobar_background.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/infobars/infobar_background.h"
 
 #include "chrome/browser/ui/infobar_container_delegate.h"
 #include "chrome/browser/ui/views/infobars/infobar_view.h"
 #include "components/infobars/core/infobar.h"
 #include "third_party/skia/include/effects/SkGradientShader.h"
@@ skipping 28 matching lines @@
 
   InfoBarView* infobar = static_cast<InfoBarView*>(view);
   SkCanvas* canvas_skia = canvas->sk_canvas();
   canvas_skia->drawPath(infobar->fill_path(), paint);
 
   paint.setShader(NULL);
   paint.setColor(SkColorSetA(separator_color_,
                              SkColorGetA(gradient_colors[0])));
   paint.setStyle(SkPaint::kStroke_Style);
   // Anti-alias the path so it doesn't look goofy when the edges are not at 45
-  // degree angles, but don't anti-alias anything else, especially not the fill,
-  // lest we get weird color bleeding problems.
+  // degree angles, but don't anti-alias anything else, especially not the
+  // fill, lest we get weird color bleeding problems.
   paint.setAntiAlias(true);
   canvas_skia->drawPath(infobar->stroke_path(), paint);
   paint.setAntiAlias(false);
 
   // Now draw the separator at the bottom.
   canvas->FillRect(
       gfx::Rect(0,
                 view->height() - InfoBarContainerDelegate::kSeparatorLineHeight,
                 view->width(), InfoBarContainerDelegate::kSeparatorLineHeight),
       separator_color_);
 }