Add support for HTTP range requests in the AppCacheURLLoaderImpl class.

content/browser/appcache/appcache_url_request_job.cc

Index: content/browser/appcache/appcache_url_request_job.cc
diff --git a/content/browser/appcache/appcache_url_request_job.cc b/content/browser/appcache/appcache_url_request_job.cc
index b17d3d779612a01d65d6cb0c80db0b89988df84f..17438b87540c7bea93e3f5739ee10d9487c6797c 100644
--- a/content/browser/appcache/appcache_url_request_job.cc
+++ b/content/browser/appcache/appcache_url_request_job.cc
@@ -24,7 +24,6 @@
 #include "net/base/net_errors.h"
 #include "net/http/http_request_headers.h"
 #include "net/http/http_response_headers.h"
-#include "net/http/http_util.h"
 #include "net/log/net_log_event_type.h"
 #include "net/log/net_log_with_source.h"
 #include "net/url_request/url_request.h"
@@ -339,32 +338,6 @@ const net::HttpResponseInfo* AppCacheURLRequestJob::http_info() const {
   return info_->http_response_info();
 }
 
-void AppCacheURLRequestJob::SetupRangeResponse() {
-  DCHECK(is_range_request() && info_.get() && reader_.get() &&
-         IsDeliveringAppCacheResponse());
-  int resource_size = static_cast<int>(info_->response_data_size());
-  if (resource_size < 0 || !range_requested_.ComputeBounds(resource_size)) {
-    range_requested_ = net::HttpByteRange();
-    return;
-  }
-
-  DCHECK(range_requested_.IsValid());
-  int offset = static_cast<int>(range_requested_.first_byte_position());
-  int length = static_cast<int>(range_requested_.last_byte_position() -
-                                range_requested_.first_byte_position() + 1);
-
-  // Tell the reader about the range to read.
-  reader_->SetReadRange(offset, length);
-
-  // Make a copy of the full response headers and fix them up
-  // for the range we'll be returning.
-  range_response_info_.reset(
-      new net::HttpResponseInfo(*info_->http_response_info()));
-  net::HttpResponseHeaders* headers = range_response_info_->headers.get();
-  headers->UpdateWithNewRange(
-      range_requested_, resource_size, true /* replace status line */);
-}
-
 void AppCacheURLRequestJob::OnReadComplete(int result) {
   DCHECK(IsDeliveringAppCacheResponse());
   if (result == 0) {
@@ -440,17 +413,7 @@ net::HostPortPair AppCacheURLRequestJob::GetSocketAddress() const {
 
 void AppCacheURLRequestJob::SetExtraRequestHeaders(
     const net::HttpRequestHeaders& headers) {
-  std::string value;
-  std::vector<net::HttpByteRange> ranges;
-  if (!headers.GetHeader(net::HttpRequestHeaders::kRange, &value) ||
-      !net::HttpUtil::ParseRangeHeader(value, &ranges)) {
-    return;
-  }
-
-  // If multiple ranges are requested, we play dumb and
-  // return the entire response with 200 OK.
-  if (ranges.size() == 1U)
-    range_requested_ = ranges[0];
+  InitializeRangeRequestInfo(headers);
 }
 
 void AppCacheURLRequestJob::NotifyRestartRequired() {