Revert of [Blob] BlobReader class & tests, and removal of all redundant reading.

storage/storage_browser.gyp

 # Copyright 2013 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'targets': [
     {
@@ skipping 15 matching lines @@
       'defines': ['STORAGE_BROWSER_IMPLEMENTATION'],
       'sources': [
         'browser/blob/blob_data_builder.cc',
         'browser/blob/blob_data_builder.h',
         'browser/blob/blob_data_handle.cc',
         'browser/blob/blob_data_handle.h',
         'browser/blob/blob_data_item.cc',
         'browser/blob/blob_data_item.h',
         'browser/blob/blob_data_snapshot.cc',
         'browser/blob/blob_data_snapshot.h',
-        'browser/blob/blob_reader.cc',
-        'browser/blob/blob_reader.h',
         'browser/blob/blob_storage_context.cc',
         'browser/blob/blob_storage_context.h',
         'browser/blob/blob_url_request_job.cc',
         'browser/blob/blob_url_request_job.h',
         'browser/blob/blob_url_request_job_factory.cc',
         'browser/blob/blob_url_request_job_factory.h',
         'browser/blob/internal_blob_data.cc',
         'browser/blob/internal_blob_data.h',
         'browser/blob/scoped_file.cc',
         'browser/blob/scoped_file.h',
         'browser/blob/shareable_blob_data_item.cc',
         'browser/blob/shareable_blob_data_item.h',
         'browser/blob/shareable_file_reference.cc',
         'browser/blob/shareable_file_reference.h',
-        'browser/blob/upload_blob_element_reader.h',
-        'browser/blob/upload_blob_element_reader.cc',
-        'browser/blob/view_blob_internals_job.h',
         'browser/blob/view_blob_internals_job.cc',
         'browser/blob/view_blob_internals_job.h',
         'browser/database/database_quota_client.cc',
         'browser/database/database_quota_client.h',
         'browser/database/database_tracker.cc',
         'browser/database/database_tracker.h',
         'browser/database/database_util.cc',
         'browser/database/database_util.h',
         'browser/database/databases_table.cc',
         'browser/database/databases_table.h',
@@ skipping 146 matching lines @@
         'browser/fileapi/dump_file_system.cc',
       ],
       'dependencies': [
         '<(DEPTH)/base/base.gyp:base',
         '<(DEPTH)/storage/storage_common.gyp:storage_common',
         'storage',
       ],
     },
   ],
 }