Oilpan: Remove most WillBe types from the code base

third_party/WebKit/Source/core/css/CSSGradientValue.cpp

 /*
  * Copyright (C) 2008 Apple Inc.  All rights reserved.
  * Copyright (C) 2015 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.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 86 matching lines @@
     Color color;
     float offset;
     bool specified;
 
     GradientStop()
         : offset(0)
         , specified(false)
     { }
 };
 
-static void replaceColorHintsWithColorStops(Vector<GradientStop>& stops, const WillBeHeapVector<CSSGradientColorStop, 2>& cssGradientStops)
+static void replaceColorHintsWithColorStops(Vector<GradientStop>& stops, const HeapVector<CSSGradientColorStop, 2>& cssGradientStops)
 {
     // This algorithm will replace each color interpolation hint with 9 regular
     // color stops. The color values for the new color stops will be calculated
     // using the color weighting formula defined in the spec. The new color
     // stops will be positioned in such a way that all the pixels between the two
     // user defined color stops have color values close to the interpolation curve.
     // If the hint is closer to the left color stop, add 2 stops to the left and
     // 6 to the right, else add 6 stops to the left and 2 to the right.
     // The color stops on the side with more space start midway because
     // the curve approximates a line in that region.
@@ skipping 448 matching lines @@
 
 bool CSSGradientValue::knownToBeOpaque(const LayoutObject& object) const
 {
     for (auto& stop : m_stops) {
         if (!stop.isHint() && resolveStopColor(*stop.m_color, object).hasAlpha())
             return false;
     }
     return true;
 }
 
-void CSSGradientValue::getStopColors(WillBeHeapVector<Color>& stopColors, const LayoutObject& object) const
+void CSSGradientValue::getStopColors(HeapVector<Color>& stopColors, const LayoutObject& object) const
 {
     for (auto& stop : m_stops) {
         if (!stop.isHint())
             stopColors.append(resolveStopColor(*stop.m_color, object));
     }
 
 }
 
 DEFINE_TRACE_AFTER_DISPATCH(CSSGradientValue)
 {
@@ skipping 631 matching lines @@
     visitor->trace(m_firstRadius);
     visitor->trace(m_secondRadius);
     visitor->trace(m_shape);
     visitor->trace(m_sizingBehavior);
     visitor->trace(m_endHorizontalSize);
     visitor->trace(m_endVerticalSize);
     CSSGradientValue::traceAfterDispatch(visitor);
 }
 
 } // namespace blink