RemoteFontFaceSource should keep FontCustomPlatformData over FontResource revalidation

third_party/WebKit/Source/platform/fonts/FontCustomPlatformData.h

Index: third_party/WebKit/Source/platform/fonts/FontCustomPlatformData.h
diff --git a/third_party/WebKit/Source/platform/fonts/FontCustomPlatformData.h b/third_party/WebKit/Source/platform/fonts/FontCustomPlatformData.h
index 80eb0cf18118fba9920db1ab08d39b91497f36f2..9864c3bd2cdc5b313a86c0a83e6514ca4999a20f 100644
--- a/third_party/WebKit/Source/platform/fonts/FontCustomPlatformData.h
+++ b/third_party/WebKit/Source/platform/fonts/FontCustomPlatformData.h
@@ -38,8 +38,8 @@
 #include "wtf/Allocator.h"
 #include "wtf/Forward.h"
 #include "wtf/Noncopyable.h"
+#include "wtf/RefCounted.h"
 #include "wtf/text/WTFString.h"
-#include <memory>
 
 class SkTypeface;
 
@@ -49,14 +49,14 @@ class FontPlatformData;
 class SharedBuffer;
 class FontVariationSettings;
 
-class PLATFORM_EXPORT FontCustomPlatformData {
+class PLATFORM_EXPORT FontCustomPlatformData
+    : public RefCounted<FontCustomPlatformData> {
   USING_FAST_MALLOC(FontCustomPlatformData);
   WTF_MAKE_NONCOPYABLE(FontCustomPlatformData);
 
  public:
-  static std::unique_ptr<FontCustomPlatformData> create(
-      SharedBuffer*,
-      String& otsParseMessage);
+  static PassRefPtr<FontCustomPlatformData> create(SharedBuffer*,
+                                                   String& otsParseMessage);
   ~FontCustomPlatformData();
 
   FontPlatformData fontPlatformData(