Attempt 2 to enable async data: URL loading.

content/public/test/frame_load_waiter.h

Index: content/public/test/frame_load_waiter.h
diff --git a/content/public/test/frame_load_waiter.h b/content/public/test/frame_load_waiter.h
new file mode 100644
index 0000000000000000000000000000000000000000..dbc2fc63a07c9744155bdc35c1cc5432a4e69983
--- /dev/null
+++ b/content/public/test/frame_load_waiter.h
@@ -0,0 +1,24 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.

[jam, 2014/04/30 16:08:19]

note: the guidelines for what goes in content/public/test and content/test are
the same as other Content APIs: i.e. stuff should go in content/public/test if
it's used by a higher module (chrome, components...), otherwise it should go
into content/test

in this particular case, this class is only used by one test, so you should
inline it in that cc file until we need it in other tests

[dcheng, 2014/04/30 17:56:06]

Moved to content/test (RenderViewTest needs this as well)

+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/macros.h"
+#include "base/run_loop.h"
+#include "content/public/renderer/render_view_observer.h"
+
+namespace content {
+
+class FrameLoadWaiter : public content::RenderViewObserver {

[sky, 2014/04/30 13:30:59]

Add description.

[dcheng, 2014/04/30 17:56:06]

Done.

+ public:
+  explicit FrameLoadWaiter(RenderView* view);
+  void Wait();
+
+ private:
+  virtual void DidFinishLoad(blink::WebLocalFrame* frame) OVERRIDE;
+
+  base::RunLoop run_loop_;
+
+  DISALLOW_COPY_AND_ASSIGN(FrameLoadWaiter);
+};
+
+}  // namespace content