Attempt 2 to enable async data: URL loading.

content/public/test/render_view_test.cc

Index: content/public/test/render_view_test.cc
diff --git a/content/public/test/render_view_test.cc b/content/public/test/render_view_test.cc
index 33c0fdb93cefd30bf1c3e4ed7a526e9b3279e578..dbbb60777e73bc1bb6f43856bf6be9f4ac2d6a3c 100644
--- a/content/public/test/render_view_test.cc
+++ b/content/public/test/render_view_test.cc
@@ -14,6 +14,7 @@
 #include "content/public/common/content_client.h"
 #include "content/public/common/renderer_preferences.h"
 #include "content/public/renderer/content_renderer_client.h"
+#include "content/public/test/frame_load_waiter.h"
 #include "content/renderer/history_controller.h"
 #include "content/renderer/history_serialization.h"
 #include "content/renderer/render_thread_impl.h"
@@ -117,12 +118,10 @@ void RenderViewTest::LoadHTML(const char* html) {
   std::string url_str = "data:text/html;charset=utf-8,";
   url_str.append(html);
   GURL url(url_str);
-
   GetMainFrame()->loadRequest(WebURLRequest(url));
-
   // The load actually happens asynchronously, so we pump messages to process
   // the pending continuation.
-  ProcessPendingMessages();
+  FrameLoadWaiter(view_).Wait();
 }
 
 void RenderViewTest::GoBack(const blink::WebHistoryItem& item) {