Plugin Power Saver Tiny: Treat completely obscured plugins as Tiny.

content/public/renderer/render_frame.h

Index: content/public/renderer/render_frame.h
diff --git a/content/public/renderer/render_frame.h b/content/public/renderer/render_frame.h
index a6abdae8a2a7cf88d074d4fb4e875c2242004fe7..686d4771bd734fab6bcb39c2b93a9e7f3018e059 100644
--- a/content/public/renderer/render_frame.h
+++ b/content/public/renderer/render_frame.h
@@ -81,8 +81,8 @@ class CONTENT_EXPORT RenderFrame : public IPC::Listener,
     CONTENT_STATUS_ESSENTIAL_CROSS_ORIGIN_WHITELISTED = 3,
     // Content is tiny in size. These are usually blocked.
     CONTENT_STATUS_TINY = 4,
-    // Content has an unknown size.
-    CONTENT_STATUS_UNKNOWN_SIZE = 5,
+    // Deprecated, as now entirely obscured content is treated as tiny.
+    DEPRECATED_CONTENT_STATUS_UNKNOWN_SIZE = 5,
     // Must be last.
     CONTENT_STATUS_NUM_ITEMS
   };