Oilpan: mark ResourceCacheValidationSuppressor as a stack allocated object.

Source/core/fetch/ResourceFetcher.h

Index: Source/core/fetch/ResourceFetcher.h
diff --git a/Source/core/fetch/ResourceFetcher.h b/Source/core/fetch/ResourceFetcher.h
index 3682772ec5e59148595c58a9d47188fa693fa3d6..1967d751d3d0598c70c049f4d309ae163331fb0e 100644
--- a/Source/core/fetch/ResourceFetcher.h
+++ b/Source/core/fetch/ResourceFetcher.h
@@ -35,7 +35,6 @@
 #include "core/fetch/ResourceLoaderOptions.h"
 #include "core/fetch/ResourcePtr.h"
 #include "platform/Timer.h"
-#include "wtf/Deque.h"
 #include "wtf/HashMap.h"
 #include "wtf/HashSet.h"
 #include "wtf/ListHashSet.h"
@@ -72,9 +71,6 @@ class ResourceLoaderSet;
 class ResourceFetcher final : public RefCountedWillBeGarbageCollectedFinalized<ResourceFetcher>, public ResourceLoaderHost {
     WTF_MAKE_NONCOPYABLE(ResourceFetcher); WTF_MAKE_FAST_ALLOCATED_WILL_BE_REMOVED;
     WILL_BE_USING_GARBAGE_COLLECTED_MIXIN(ResourceFetcher);
-friend class ImageLoader;
-friend class ResourceCacheValidationSuppressor;
-
 public:
     static PassRefPtrWillBeRawPtr<ResourceFetcher> create(PassOwnPtrWillBeRawPtr<FetchContext> context) { return adoptRefWillBeNoop(new ResourceFetcher(context)); }
     virtual ~ResourceFetcher();
@@ -178,6 +174,8 @@ public:
     static ResourceFetcher* toResourceFetcher(ResourceLoaderHost*);
 
 private:
+    friend class ImageLoader;
+    friend class ResourceCacheValidationSuppressor;
     friend class ResourceFetcherUpgradeTest;
     friend class ResourceFetcherHintsTest;
 
@@ -259,7 +257,7 @@ private:
 
 class ResourceCacheValidationSuppressor {
     WTF_MAKE_NONCOPYABLE(ResourceCacheValidationSuppressor);
-    WTF_MAKE_FAST_ALLOCATED;
+    STACK_ALLOCATED();
 public:
     ResourceCacheValidationSuppressor(ResourceFetcher* loader)
         : m_loader(loader)
@@ -276,10 +274,10 @@ public:
             m_loader->m_allowStaleResources = m_previousState;
     }
 private:
-    ResourceFetcher* m_loader;
+    RawPtrWillBeMember<ResourceFetcher> m_loader;
     bool m_previousState;
 };
 
 } // namespace blink
 
-#endif
+#endif // ResourceFetcher_h