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

Source/core/style/BorderImageLengthBox.h

Index: Source/core/style/BorderImageLengthBox.h
diff --git a/Source/core/style/BorderImageLengthBox.h b/Source/core/style/BorderImageLengthBox.h
index 7ba5dae9d40f6a29ab24f9c7d19426ccadc1333c..bff13dedaf0ffa4a30bb2d1525d62dac2995a919 100644
--- a/Source/core/style/BorderImageLengthBox.h
+++ b/Source/core/style/BorderImageLengthBox.h
@@ -32,6 +32,7 @@
 #define BorderImageLengthBox_h
 
 #include "core/style/BorderImageLength.h"
+#include "wtf/Allocator.h"
 
 namespace blink {
 
@@ -40,6 +41,7 @@ namespace blink {
 // http://www.w3.org/TR/css3-background/#border-image-width
 // http://www.w3.org/TR/css3-background/#border-image-outset
 class BorderImageLengthBox {
+    DISALLOW_ALLOCATION();
 public:
     BorderImageLengthBox(Length length)
         : m_left(length)