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

Source/core/style/StyleContentAlignmentData.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 StyleContentAlignmentData_h
 #define StyleContentAlignmentData_h
 
 #include "core/style/ComputedStyleConstants.h"
+#include "wtf/Allocator.h"
 
 namespace blink {
 
 class StyleContentAlignmentData {
+    DISALLOW_ALLOCATION();
 public:
     // Style data for Content-Distribution properties: align-content, justify-content.
     // <content-distribution> || [ <overflow-position>? && <content-position> ]
     StyleContentAlignmentData(ContentPosition position, ContentDistributionType distribution, OverflowAlignment overflow = OverflowAlignmentDefault)
         : m_position(position)
         , m_distribution(distribution)
         , m_overflow(overflow)
     {
     }
 
@@ skipping 17 matching lines @@
 
 private:
     unsigned m_position : 4; // ContentPosition
     unsigned m_distribution : 3; // ContentDistributionType
     unsigned m_overflow : 2; // OverflowAlignment
 };
 
 } // namespace blink
 
 #endif // StyleContentAlignmentData_h