Make content verification see 0-byte files.

extensions/browser/extension_protocols.cc

 // Copyright 2014 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 "extensions/browser/extension_protocols.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <algorithm>
@@ skipping 250 matching lines @@
   }
 
   void OnReadComplete(net::IOBuffer* buffer, int result) override {
     if (result >= 0)
       UMA_HISTOGRAM_COUNTS("ExtensionUrlRequest.OnReadCompleteResult", result);
     else
       UMA_HISTOGRAM_SPARSE_SLOWLY("ExtensionUrlRequest.OnReadCompleteError",
                                   -result);
     if (result > 0) {
       bytes_read_ += result;
-      if (verify_job_.get()) {
+      if (verify_job_.get())
         verify_job_->BytesRead(result, buffer->data());
-        if (!remaining_bytes())
-          verify_job_->DoneReading();
-      }
     }
   }
 
+  void DoneReading() override {
+    URLRequestFileJob::DoneReading();
+    if (verify_job_.get())
+      verify_job_->DoneReading();
+  }
+
  private:
   ~URLRequestExtensionJob() override {
     UMA_HISTOGRAM_COUNTS("ExtensionUrlRequest.TotalKbRead", bytes_read_ / 1024);
     UMA_HISTOGRAM_COUNTS("ExtensionUrlRequest.SeekPosition", seek_position_);
     if (request_timer_.get())
       UMA_HISTOGRAM_TIMES("ExtensionUrlRequest.Latency",
                           request_timer_->Elapsed());
   }
 
   void OnFilePathAndLastModifiedTimeRead(base::FilePath* read_file_path,
@@ skipping 322 matching lines @@
                                extensions::InfoMap* extension_info_map) {
   return base::MakeUnique<ExtensionProtocolHandler>(is_incognito,
                                                     extension_info_map);
 }
 
 void SetExtensionProtocolTestHandler(ExtensionProtocolTestHandler* handler) {
   g_test_handler = handler;
 }
 
 }  // namespace extensions