MediaControls Accessibility: update sliders grey color to a darker shade.

third_party/WebKit/Source/core/paint/MediaControlsPainter.cpp

 /*
  * Copyright (C) 2009 Apple Inc.
  * Copyright (C) 2009 Google Inc.
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
@@ skipping 357 matching lines @@
         }
 
         if (currentPosition > startPosition)
             paintSliderRangeHighlight(rect, style, context, startPosition, currentPosition, startColor, endColor);
 
         // Draw grey-ish highlight after current time.
         if (!useNewUi) {
             startColor = Color(60, 60, 60);
             endColor = Color(76, 76, 76);
         } else {
-            startColor = endColor = Color(0x9f, 0x9f, 0x9f); // light grey.
+            startColor = endColor = Color(0x5a, 0x5a, 0x5a); // dark grey
         }
 
         if (endPosition > currentPosition)
             paintSliderRangeHighlight(rect, style, context, currentPosition, endPosition, startColor, endColor);
 
         return;
     }
 }
 
 void MediaControlsPainter::adjustMediaSliderThumbPaintSize(const IntRect& rect, const ComputedStyle& style, IntRect& rectOut)
@@ skipping 45 matching lines @@
         return false;
 
     GraphicsContext& context = paintInfo.context;
     const ComputedStyle& style = object.styleRef();
 
     // Paint the slider bar.
     Color sliderBackgroundColor;
     if (!RuntimeEnabledFeatures::newMediaPlaybackUiEnabled())
         sliderBackgroundColor = Color(11, 11, 11);
     else
-        sliderBackgroundColor = Color(0x9f, 0x9f, 0x9f);
+        sliderBackgroundColor = Color(0x5a, 0x5a, 0x5a); // dark grey
     paintRoundedSliderBackground(rect, style, context, sliderBackgroundColor);
 
     // Calculate volume position for white background rectangle.
     float volume = mediaElement->volume();
     if (std::isnan(volume) || volume < 0)
         return true;
     if (volume > 1)
         volume = 1;
     if (!hasSource(mediaElement) || !mediaElement->hasAudio() || mediaElement->muted())
         volume = 0;
@@ skipping 177 matching lines @@
     }
 
     float zoomLevel = style.effectiveZoom();
     if (thumbImage) {
         style.setWidth(Length(static_cast<int>(width * zoomLevel), Fixed));
         style.setHeight(Length(static_cast<int>(height * zoomLevel), Fixed));
     }
 }
 
 } // namespace blink