Add the ability to specify a default MIME type when loading a resource. We'l...

chrome/browser/renderer_host/buffered_resource_handler.cc

Index: chrome/browser/renderer_host/buffered_resource_handler.cc
===================================================================
--- chrome/browser/renderer_host/buffered_resource_handler.cc	(revision 12710)
+++ chrome/browser/renderer_host/buffered_resource_handler.cc	(working copy)
@@ -180,6 +180,11 @@
 
 bool BufferedResourceHandler::KeepBuffering(int bytes_read) {
   DCHECK(read_buffer_);
+
+  ResourceDispatcherHost::ExtraRequestInfo* info =
+      ResourceDispatcherHost::ExtraInfoForRequest(request_);
+  DCHECK(info);
+
   if (my_buffer_) {
     // We are using our own buffer to read, update the main buffer.
     CHECK(bytes_read + bytes_read_ < read_buffer_size_);
@@ -193,6 +198,9 @@
     std::string type_hint, new_type;
     request_->GetMimeType(&type_hint);
 
+    if (type_hint.empty())
+      type_hint = info->default_mime_type;
+
     if (!net::SniffMimeType(read_buffer_->data(), bytes_read_,
                             request_->url(), type_hint, &new_type)) {
       // SniffMimeType() returns false if there is not enough data to determine