[Blob] Blob paging to disk patch.

storage/browser/blob/blob_data_builder.cc

 // Copyright (c) 2015 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.
 
 #include "storage/browser/blob/blob_data_builder.h"
 
 #include "base/numerics/safe_conversions.h"
 #include "base/numerics/safe_math.h"
 #include "base/time/time.h"
 #include "net/disk_cache/disk_cache.h"
-#include "storage/browser/blob/shareable_file_reference.h"
 
 namespace storage {
 
 const char BlobDataBuilder::kAppendFutureFileTemporaryFileName[] =
     "kFakeFilenameToBeChangedByPopulateFutureFile";
 
 BlobDataBuilder::BlobDataBuilder(const std::string& uuid) : uuid_(uuid) {
 }
 BlobDataBuilder::~BlobDataBuilder() {
 }
@@ skipping 113 matching lines @@
                                  uint64_t offset,
                                  uint64_t length,
                                  const base::Time& expected_modification_time) {
   scoped_ptr<DataElement> element(new DataElement());
   element->SetToFilePathRange(file_path, offset, length,
                               expected_modification_time);
   items_.push_back(
       new BlobDataItem(element.Pass(), ShareableFileReference::Get(file_path)));
 }
 
+void BlobDataBuilder::AppendShareableFileReference(
+    const scoped_refptr<ShareableFileReference> file,
+    uint64_t offset,
+    uint64_t length,
+    const base::Time& expected_modification_time) {
+  scoped_ptr<DataElement> element(new DataElement());
+  element->SetToFilePathRange(file->path(), offset, length,
+                              expected_modification_time);
+  items_.push_back(new BlobDataItem(element.Pass(), file));
+}
+
 void BlobDataBuilder::AppendBlob(const std::string& uuid,
                                  uint64_t offset,
                                  uint64_t length) {
   DCHECK_GT(length, 0ul);
   scoped_ptr<DataElement> element(new DataElement());
   element->SetToBlobRange(uuid, offset, length);
   items_.push_back(new BlobDataItem(element.Pass()));
 }
 
 void BlobDataBuilder::AppendBlob(const std::string& uuid) {
@@ skipping 39 matching lines @@
       << ", content_type: " << x.content_type_
       << ", content_disposition: " << x.content_disposition_ << ", items: [";
   for (const auto& item : x.items_) {
     PrintTo(*item, os);
     *os << ", ";
   }
   *os << "]}";
 }
 
 }  // namespace storage