Continue to use _NSDrawCarbonThemeBezel to draw text field borders.

third_party/WebKit/Source/core/paint/ThemePainterMac.mm

 /*
  * Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Google, Inc.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 44 matching lines @@
 namespace blink {
 
 ThemePainterMac::ThemePainterMac(LayoutThemeMac& layoutTheme)
     : ThemePainter(), m_layoutTheme(layoutTheme) {}
 
 bool ThemePainterMac::paintTextField(const LayoutObject& o,
                                      const PaintInfo& paintInfo,
                                      const IntRect& r) {
   LocalCurrentGraphicsContext localContext(paintInfo.context, r);
 
-#if __MAC_OS_X_VERSION_MIN_REQUIRED <= 1070
   bool useNSTextFieldCell = o.styleRef().hasAppearance() &&
                             o.styleRef().visitedDependentColor(
                                 CSSPropertyBackgroundColor) == Color::white &&
                             !o.styleRef().hasBackgroundImage();
 
-  // We do not use NSTextFieldCell to draw styled text fields on Lion and
-  // SnowLeopard because there are a number of bugs on those platforms that
-  // require NSTextFieldCell to be in charge of painting its own
-  // background. We need WebCore to paint styled backgrounds, so we'll use
-  // this AppKit SPI function instead.
+  // We do not use NSTextFieldCell to draw styled text fields since it induces a
+  // behavior change while remaining a fragile solution.
+  // https://bugs.chromium.org/p/chromium/issues/detail?id=658085#c3
   if (!useNSTextFieldCell) {
     _NSDrawCarbonThemeBezel(
         r, LayoutTheme::isEnabled(o) && !LayoutTheme::isReadOnlyControl(o),
         YES);
     return false;
   }
-#endif
 
   NSTextFieldCell* textField = m_layoutTheme.textField();
 
   GraphicsContextStateSaver stateSaver(paintInfo.context);
 
   [textField setEnabled:(LayoutTheme::isEnabled(o) &&
                          !LayoutTheme::isReadOnlyControl(o))];
   [textField drawWithFrame:NSRect(r) inView:m_layoutTheme.documentViewFor(o)];
 
   [textField setControlView:nil];
@@ skipping 713 matching lines @@
     backgroundBounds.origin.y = bounds.origin.y + (heightDiff / 2) + 1;
   }
 
   LocalCurrentGraphicsContext localContext(paintInfo.context, rect);
   HIThemeDrawButton(&backgroundBounds, &drawInfo, localContext.cgContext(),
                     kHIThemeOrientationNormal, 0);
   return false;
 }
 
 }  // namespace blink