Ensure blobs and associated temp/shareable files survive URLRequest uploads.

BUG=115603
Review URL: https://chromiumcodereview.appspot.com/9569035

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@124581 0039d316-1c4b-4281-b951-d872f2087c98

net/base/upload_data.h

@@ -13,6 +13,7 @@
 #include "base/file_path.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/ref_counted.h"
+#include "base/supports_user_data.h"
 #include "base/time.h"
 #include "googleurl/src/gurl.h"
 #include "net/base/net_export.h"
@@ -32,7 +33,16 @@ class NET_EXPORT_PRIVATE ChunkCallback {
   virtual ~ChunkCallback() {}
 };
 
-class NET_EXPORT UploadData : public base::RefCounted<UploadData> {
+//-----------------------------------------------------------------------------
+// A very concrete class representing the data to be uploaded as part of a
+// URLRequest.
+//
+// Until there is a more abstract class for this, this one derives from
+// SupportsUserData to allow users to stash random data by
+// key and ensure it's destruction when UploadData is finally deleted.
+class NET_EXPORT UploadData
+    : public base::RefCounted<UploadData>,
+      public base::SupportsUserData {
  public:
   enum Type {
     TYPE_BYTES,
@@ -231,7 +241,7 @@ class NET_EXPORT UploadData : public base::RefCounted<UploadData> {
 
   friend class base::RefCounted<UploadData>;
 
-  ~UploadData();
+  virtual ~UploadData();
 
   std::vector<Element> elements_;
   int64 identifier_;

webkit/blob/blob_storage_controller.cc

-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
@@ -198,6 +198,11 @@ void BlobStorageController::ResolveBlobReferencesInUploadData(
     if (blob_data->items().empty())
       continue;
 
+    // Ensure the blob and any attached shareable files survive until
+    // upload completion.
+    upload_data->SetUserData(blob_data,
+                             new base::UserDataAdapter<BlobData>(blob_data));
+
     // Insert the elements in the referred blob data.
     // Note that we traverse from the bottom so that the elements can be
     // inserted in the original order.
@@ -208,13 +213,13 @@ void BlobStorageController::ResolveBlobReferencesInUploadData(
       switch (item.type) {
         case BlobData::TYPE_DATA:
           // TODO(jianli): Figure out how to avoid copying the data.
+          // TODO(michaeln): Now that blob_data surives for the duration,
+          // maybe UploadData could take a raw ptr without having to copy.
           iter->SetToBytes(
               &item.data.at(0) + static_cast<int>(item.offset),
               static_cast<int>(item.length));
           break;
         case BlobData::TYPE_FILE:
-          // TODO(michaeln): Ensure that any temp files survive till the
-          // net::URLRequest is done with the upload.
           iter->SetToFilePathRange(
               item.file_path,
               item.offset,