Bug 883024 - Install missing stylesheets for b2g. r=roc

b2g/installer/package-manifest.in

@@ -605,6 +605,9 @@
 @BINPATH@/res/EditorOverride.css
 @BINPATH@/res/contenteditable.css
 @BINPATH@/res/designmode.css
+@BINPATH@/res/ImageDocument.css
+@BINPATH@/res/TopLevelImageDocument.css
+@BINPATH@/res/TopLevelVideoDocument.css
 @BINPATH@/res/table-add-column-after-active.gif
 @BINPATH@/res/table-add-column-after-hover.gif
 @BINPATH@/res/table-add-column-after.gif