Allow URL requests for object/embed tags to be intercepted as streams.

chrome/browser/search/iframe_source_unittest.cc

Index: chrome/browser/search/iframe_source_unittest.cc
diff --git a/chrome/browser/search/iframe_source_unittest.cc b/chrome/browser/search/iframe_source_unittest.cc
index 678b24916ea4928cdacf968c3c721d2a21afab64..e4addc832f3e8be78d0534c049c4cba405e0cb67 100644
--- a/chrome/browser/search/iframe_source_unittest.cc
+++ b/chrome/browser/search/iframe_source_unittest.cc
@@ -110,6 +110,7 @@ class IframeSourceTest : public testing::Test {
           MSG_ROUTING_NONE,
           false,   // is_main_frame
           false,   // parent_is_main_frame
+          true,    // allow_download
           false);  // is_async
     }
     return request.Pass();