Make classes and structures in core/style, core/plugins and core/streams fast-allocated.

Source/core/style/GridResolvedPosition.h

 // Copyright 2014 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.
 
 #ifndef GridResolvedPosition_h
 #define GridResolvedPosition_h
 
 #include "core/style/GridPosition.h"
+#include "wtf/Allocator.h"
 
 namespace blink {
 
 struct GridSpan;
 class LayoutBox;
 class ComputedStyle;
 
 enum GridPositionSide {
     ColumnStartSide,
     ColumnEndSide,
     RowStartSide,
     RowEndSide
 };
 
 enum GridTrackSizingDirection {
     ForColumns,
     ForRows
 };
 
 // This class represents an index into one of the dimensions of the grid array.
 // Wraps a size_t integer just for the purpose of knowing what we manipulate in the grid code.
 class GridResolvedPosition {
+    DISALLOW_ALLOCATION();
 public:
     static GridResolvedPosition adjustGridPositionForAfterEndSide(size_t resolvedPosition)
     {
         return resolvedPosition ? GridResolvedPosition(resolvedPosition - 1) : GridResolvedPosition(0);
     }
 
     static GridResolvedPosition adjustGridPositionForSide(size_t resolvedPosition, GridPositionSide side)
     {
         // An item finishing on the N-th line belongs to the N-1-th cell.
         if (side == ColumnEndSide || side == RowEndSide)
@@ skipping 80 matching lines @@
 private:
 
     static size_t explicitGridSizeForSide(const ComputedStyle&, GridPositionSide);
 
     size_t m_integerPosition;
 };
 
 } // namespace blink
 
 #endif // GridResolvedPosition_h