Test and css changes for dom_distiller inclusion of video.

components/test/data/dom_distiller/simple_article.html

Index: components/test/data/dom_distiller/simple_article.html
diff --git a/components/test/data/dom_distiller/simple_article.html b/components/test/data/dom_distiller/simple_article.html
index ed6b1e2f5c476f86f672586f37bbe3ef476ee0f7..7dd9dcacea360400f78db9443e41f04e05711f36 100644
--- a/components/test/data/dom_distiller/simple_article.html
+++ b/components/test/data/dom_distiller/simple_article.html
@@ -11,7 +11,12 @@
 <p>Lorem ipsum dolor sit amet, at alia aliquip vel. Quas inani labore an vel. Sed an nemore minimum accusata. Sint inermis tacimates est ex, ad movet iracundia mei, delicata iracundia laboramus ei eos. Illud principes complectitur te nec, ius alienum insolens ea, cu quo oratio omnesque.
 
 <p>Lorem ipsum dolor sit amet, at alia aliquip vel. Quas inani labore an vel. Sed an nemore minimum accusata. Sint inermis tacimates est ex, ad movet iracundia mei, delicata iracundia laboramus ei eos. Illud principes complectitur te nec, ius alienum insolens ea, cu quo oratio omnesque.
-
+<video width="500" height="400" controls>

[cjhopman, 2014/06/06 23:11:05]

I'd rather create a copy of this simple article with the video stuff added so
that this simple article stays simple as we add tests for more stuff.

[Yaron, 2014/06/12 00:46:22]

Done.

+  <source src="relative_video.mp4" type="video/mp4">
+  <source src="http://www.google.com/absolute_video.ogg" type="video/ogg">
+  <track src="relative_track_en.vtt" kind="chapters" srclang="en" label="English">
+  <track src="http://www.google.com/absolute_track_fr.vtt" kind="chapters" srclang="fr" label="French">
+</video>
 </div>
 <br>
 <div>