Don't set the request target type to object when navigating from a Pepper plug-in.

content/renderer/pepper/pepper_url_loader_host.cc

Index: content/renderer/pepper/pepper_url_loader_host.cc
diff --git a/content/renderer/pepper/pepper_url_loader_host.cc b/content/renderer/pepper/pepper_url_loader_host.cc
index 8343f1934eac238412cbecf3e05912718c9a6886..9b951f57354ef065bab3c3686c7d29b84dd5d1f7 100644
--- a/content/renderer/pepper/pepper_url_loader_host.cc
+++ b/content/renderer/pepper/pepper_url_loader_host.cc
@@ -249,9 +249,12 @@ int32_t PepperURLLoaderHost::InternalOnHostMsgOpen(
   WebFrame* frame = GetFrame();
   if (!frame)
     return PP_ERROR_FAILED;
+
   WebURLRequest web_request;
   if (!CreateWebURLRequest(&filled_in_request_data, frame, &web_request))
     return PP_ERROR_FAILED;
+
+  web_request.setTargetType(WebURLRequest::TargetIsObject);
   web_request.setRequestorProcessID(renderer_ppapi_host_->GetPluginPID());
 
   WebURLLoaderOptions options;