Merge pull request #305 from youennf/fix-torch-capabilities

Make torch capability a sequence<boolean> like other similar capabilities like echoCancellation

index.bs

@@ -459,7 +459,7 @@ This Section defines a new set of [[mediacapture-streams#constrainable-propertie
     MediaSettingsRange   tilt;
     MediaSettingsRange   zoom;
 
-    boolean              torch;
+    sequence<boolean> torch;
   };
 </pre>
 
@@ -531,7 +531,9 @@ This Section defines a new set of [[mediacapture-streams#constrainable-propertie
   </dd>
 
   <dt><dfn dict-member for="MediaTrackCapabilities"><code>torch</code></dfn></dt>
-  <dd>A boolean indicating whether camera supports <a>torch</a>  mode- on meaning supported.</dd>
+  <dd>If the source cannot turn on <a>torch</a>, a single <code>false</code> is reported.
+  If the source cannot turn off <a>torch</a>, a single <code>true</code> is reported.
+  If the script can control the feature, the source reports a list with both <code>true</code> and <code>false</code> as possible values.</dd>
 </dl>
 
 ## {{MediaTrackConstraintSet}} dictionary ## {#mediatrackconstraintset-section}