Make classes and structures in core/html fast-allocated.

Source/core/html/parser/HTMLSrcsetParser.h

 /*
  * Copyright (C) 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2013 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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 15 matching lines @@
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #ifndef HTMLSrcsetParser_h
 #define HTMLSrcsetParser_h
 
 #include "core/CoreExport.h"
+#include "wtf/Allocator.h"
 #include "wtf/text/WTFString.h"
 
 namespace blink {
 
 class Document;
 
 enum { UninitializedDescriptor = -1 };
 
 class DescriptorParsingResult {
+    STACK_ALLOCATED();
 public:
     DescriptorParsingResult()
         : m_density(UninitializedDescriptor)
         , m_resourceWidth(UninitializedDescriptor)
         , m_resourceHeight(UninitializedDescriptor)
     {
     }
 
     bool hasDensity() const { return m_density >= 0; }
     bool hasWidth() const { return m_resourceWidth >= 0; }
     bool hasHeight() const { return m_resourceHeight >= 0; }
 
     float density() const { ASSERT(hasDensity()); return m_density; }
     unsigned resourceWidth() const { ASSERT(hasWidth()); return m_resourceWidth; }
     unsigned resourceHeight() const { ASSERT(hasHeight()); return m_resourceHeight; }
 
     void setResourceWidth(int width) { ASSERT(width >= 0); m_resourceWidth = (unsigned)width; }
     void setResourceHeight(int height) { ASSERT(height >= 0); m_resourceHeight = (unsigned)height; }
     void setDensity(float densityToSet) { ASSERT(densityToSet >= 0); m_density = densityToSet; }
 
 private:
     float m_density;
     int m_resourceWidth;
     int m_resourceHeight;
 };
 
 class ImageCandidate {
+    ALLOW_ONLY_INLINE_ALLOCATION();
 public:
     enum OriginAttribute {
         SrcsetOrigin,
         SrcOrigin
     };
 
     ImageCandidate()
         : m_density(1.0)
         , m_resourceWidth(UninitializedDescriptor)
         , m_originAttribute(SrcsetOrigin)
@@ skipping 52 matching lines @@
 
 ImageCandidate bestFitSourceForSrcsetAttribute(float deviceScaleFactor, float sourceSize, const String& srcsetAttribute, Document* = nullptr);
 
 CORE_EXPORT ImageCandidate bestFitSourceForImageAttributes(float deviceScaleFactor, float sourceSize, const String& srcAttribute, const String& srcsetAttribute, Document* = nullptr);
 
 String bestFitSourceForImageAttributes(float deviceScaleFactor, float sourceSize, const String& srcAttribute, ImageCandidate& srcsetImageCandidate);
 
 }
 
 #endif