PPAPI: Support sending browser-hosted resources synchronously

chrome/renderer/pepper/pepper_flash_drm_renderer_host.cc

Index: chrome/renderer/pepper/pepper_flash_drm_renderer_host.cc
diff --git a/chrome/renderer/pepper/pepper_flash_drm_renderer_host.cc b/chrome/renderer/pepper/pepper_flash_drm_renderer_host.cc
index 2e95d23dd41d8e1bc953da31be5a5cab57ae936c..1018a6e61a183ce318fcee565115e70bf1e59157 100644
--- a/chrome/renderer/pepper/pepper_flash_drm_renderer_host.cc
+++ b/chrome/renderer/pepper/pepper_flash_drm_renderer_host.cc
@@ -73,9 +73,12 @@ void PepperFlashDRMRendererHost::DidCreateFileRefHosts(
     const ppapi::host::ReplyMessageContext& reply_context,
     const base::FilePath& external_path,
     int renderer_pending_host_id,
-    const std::vector<int>& browser_pending_host_ids) {
-  DCHECK_EQ(1U, browser_pending_host_ids.size());
-  int browser_pending_host_id = browser_pending_host_ids[0];
+    const ppapi::proxy::CompletedBrowserResourceHosts& browser_hosts) {
+  if (browser_hosts.host_ids.empty()) {
+    NOTREACHED();
+    return;
+  }
+  int browser_pending_host_id = browser_hosts.host_ids[0];
 
   ppapi::FileRefCreateInfo create_info =
       ppapi::MakeExternalFileRefCreateInfo(external_path,