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

Source/core/style/StyleSelfAlignmentData.h

 // Copyright (c) 2015 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 StyleSelfAlignmentData_h
 #define StyleSelfAlignmentData_h
 
 #include "core/style/ComputedStyleConstants.h"
+#include "wtf/Allocator.h"
 
 namespace blink {
 
 class StyleSelfAlignmentData {
+    DISALLOW_ALLOCATION();
 public:
     // Style data for Self-Aligment and Default-Alignment properties: align-{self, items}, justify-{self, items}.
     // [ <self-position> && <overflow-position>? ] | [ legacy && [ left | right | center ] ]
     StyleSelfAlignmentData(ItemPosition position, OverflowAlignment overflow, ItemPositionType positionType = NonLegacyPosition)
         : m_position(position)
         , m_positionType(positionType)
         , m_overflow(overflow)
     {
     }
 
@@ skipping 17 matching lines @@
 
 private:
     unsigned m_position : 4; // ItemPosition
     unsigned m_positionType: 1; // Whether or not alignment uses the 'legacy' keyword.
     unsigned m_overflow : 2; // OverflowAlignment
 };
 
 } // namespace blink
 
 #endif // StyleSelfAlignmentData_h