Remove code path that passes a file handle to the renderer

Since the code now does range request without any caching
the code path for passing file handle is not used any more.

Changes:
1. Remove response_data_file in webkit_glue::ResourceResponseHead
2. Remove response_data_file in net::ResourceInfo
3. Remove code that passes file handle using IPC
4. Remove code that passes file hadnle from network layer to ResourceDispatcherHost
5. Remove MediaResourceHandler
6. Remove code in disk_cache that expose the file handle
7. Remove ChromeURLRequestContext::CreateOffTheRecordForMedia() so no more OTR request context for media, in OTR mode simply memory cache is used
8. Reset cache size for media cache to default

BUG=12249
BUG=12256

Review URL: http://codereview.chromium.org/113931

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@17227 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 0 insertions, 18 deletions

diff --git a/net/url_request/url_request_file_job.cc b/net/url_request/url_request_file_job.cc
index 7941424..67f4fb2 100644
--- a/net/url_request/url_request_file_job.cc
+++ b/net/url_request/url_request_file_job.cc
@@ -184,24 +184,6 @@ bool URLRequestFileJob::GetMimeType(std::string* mime_type) const {
   return net::GetMimeTypeFromFile(file_path_, mime_type);
 }
 
-void URLRequestFileJob::GetResponseInfo(net::HttpResponseInfo* info) {
-  DCHECK(request_);
-
-  // If we have enabled downloading the file, the requester expects to receive
-  // a file handle to the file. Since we are serving file:/// url requests we
-  // can provide such a handle if the file exists.
-  bool created;
-  if ((request_->load_flags() & net::LOAD_ENABLE_DOWNLOAD_FILE) &&
-      stream_.IsOpen()) {
-        info->response_data_file =
-            base::CreatePlatformFile(file_path_.ToWStringHack(),
-                                     base::PLATFORM_FILE_OPEN |
-                                     base::PLATFORM_FILE_READ |
-                                     base::PLATFORM_FILE_ASYNC,
-                                     &created);
-  }
-}
-
 void URLRequestFileJob::SetExtraRequestHeaders(const std::string& headers) {
   // We only care about "Range" header here.
   std::vector<net::HttpByteRange> ranges;