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Unified Diff: chromecast/renderer/cast_media_load_deferrer.h

Issue 824733002: Support for defered media load to cast_content_render_client. (Closed) Base URL: https://chromium.googlesource.com/chromium/src.git@master
Patch Set: New metrics. Created 6 years ago
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Index: chromecast/renderer/cast_media_load_deferrer.h
diff --git a/chromecast/renderer/cast_media_load_deferrer.h b/chromecast/renderer/cast_media_load_deferrer.h
new file mode 100644
index 0000000000000000000000000000000000000000..72a57ca9bece510cfec72ef972903004e62f0c44
--- /dev/null
+++ b/chromecast/renderer/cast_media_load_deferrer.h
@@ -0,0 +1,35 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef CHROMECAST_RENDERER_CAST_MEDIA_LOAD_DEFERRER_H_
+#define CHROMECAST_RENDERER_CAST_MEDIA_LOAD_DEFERRER_H_
+
+#include "base/callback.h"
+#include "base/macros.h"
+#include "content/public/renderer/render_frame_observer.h"
+
+namespace chromecast {
+
+// Defers media player loading in background web apps until brought into
+// foreground.
+class CastMediaLoadDeferrer : public content::RenderFrameObserver {
+ public:
+ // Will run |closure| to continue loading the media resource once the page is
+ // swapped in.
+ CastMediaLoadDeferrer(content::RenderFrame* render_frame,
+ const base::Closure& continue_loading_cb);
+ ~CastMediaLoadDeferrer() override;
+
+ private:
+ // content::RenderFrameObserver implementation:
+ void WasShown() override;
+
+ base::Closure continue_loading_cb_;
+
+ DISALLOW_COPY_AND_ASSIGN(CastMediaLoadDeferrer);
+};
+
+} // namespace chromecast
+
+#endif // CHROMECAST_RENDERER_CAST_MEDIA_LOAD_DEFERRER_H_
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