[part 1] Make classes and structures in modules/ fast-allocated.

Source/modules/fetch/DataConsumerTee.h

Index: Source/modules/fetch/DataConsumerTee.h
diff --git a/Source/modules/fetch/DataConsumerTee.h b/Source/modules/fetch/DataConsumerTee.h
index eabd53b4a0566a50903f31df46fdaf4aa312b0e5..30a5782f95c1b09d5cb47600f7395bfb41531ea2 100644
--- a/Source/modules/fetch/DataConsumerTee.h
+++ b/Source/modules/fetch/DataConsumerTee.h
@@ -8,6 +8,7 @@
 #include "modules/ModulesExport.h"
 #include "modules/fetch/FetchDataConsumerHandle.h"
 #include "public/platform/WebDataConsumerHandle.h"
+#include "wtf/Allocator.h"
 #include "wtf/OwnPtr.h"
 #include "wtf/PassOwnPtr.h"
 
@@ -16,6 +17,7 @@ namespace blink {
 class ExecutionContext;
 
 class MODULES_EXPORT DataConsumerTee {
+    STATIC_ONLY(DataConsumerTee);
 public:
     // Create two handles from one. |src| must be a valid unlocked handle.
     static void create(ExecutionContext*, PassOwnPtr<WebDataConsumerHandle> src, OwnPtr<WebDataConsumerHandle>* dest1, OwnPtr<WebDataConsumerHandle>* dest2);