Make classes and structures in core/workers, core/timing and core/testing fast-allocated.

Source/core/timing/MemoryInfo.h

Index: Source/core/timing/MemoryInfo.h
diff --git a/Source/core/timing/MemoryInfo.h b/Source/core/timing/MemoryInfo.h
index 182799253510323b2df055fbb4d7181491fbf26d..43e4c06b4e67f053ef47b64d7821ac17757d4d1f 100644
--- a/Source/core/timing/MemoryInfo.h
+++ b/Source/core/timing/MemoryInfo.h
@@ -34,10 +34,12 @@
 #include "bindings/core/v8/ScriptWrappable.h"
 #include "core/CoreExport.h"
 #include "platform/heap/Handle.h"
+#include "wtf/Allocator.h"
 
 namespace blink {
 
 struct HeapInfo {
+    DISALLOW_ALLOCATION();
     HeapInfo()
         : usedJSHeapSize(0)
         , totalJSHeapSize(0)