Remove SupportsUserData from ResourceRequestBodyImpl.

content/browser/blob_storage/chrome_blob_storage_context.h

Index: content/browser/blob_storage/chrome_blob_storage_context.h
diff --git a/content/browser/blob_storage/chrome_blob_storage_context.h b/content/browser/blob_storage/chrome_blob_storage_context.h
index bd8b92ef4af4f9e64e16791d9e2c0421aea35594..ea81ee428b8dd5382beb82ed7d19bac3e1f24967 100644
--- a/content/browser/blob_storage/chrome_blob_storage_context.h
+++ b/content/browser/blob_storage/chrome_blob_storage_context.h
@@ -9,11 +9,13 @@
 #include <stdint.h>
 
 #include <memory>
+#include <vector>
 
 #include "base/files/file_path.h"
 #include "base/memory/ref_counted.h"
 #include "base/sequenced_task_runner_helpers.h"
 #include "content/common/content_export.h"
+#include "storage/browser/blob/blob_data_handle.h"
 
 namespace base {
 class FilePath;
@@ -89,10 +91,14 @@ struct ChromeBlobStorageContextDeleter {
 storage::BlobStorageContext* GetBlobStorageContext(
     ChromeBlobStorageContext* blob_storage_context);
 
-// Attaches blob data handles to the ResourceRequestBodyImpl body passed in.
-// This is used for POST and PUT requests.
-bool AttachRequestBodyBlobDataHandles(ResourceRequestBodyImpl* body,
-                                      ResourceContext* resource_context);
+using BlobHandles = std::vector<std::unique_ptr<storage::BlobDataHandle>>;
+
+// Attempts to create a vector of BlobDataHandles that ensure any blob data
+// associated with |body| isn't cleaned up until the handles are destroyed.
+// Returns false on failure. This is used for POST and PUT requests.
+bool GetBodyBlobDataHandles(ResourceRequestBodyImpl* body,
+                            ResourceContext* resource_context,
+                            BlobHandles* blob_handles);
 
 }  // namespace content