Bug 773460; IsLinux should be false for Android. r=roc

--HG--
extra : rebase_source : ddc09bd2ad7b380d42fbefe34f2fc2e2fc9b5a39

content/canvas/test/test_canvas.html

@@ -20,7 +20,8 @@ function IsD2DEnabled() {
 }
 
 function IsLinux() {
-    return navigator.platform.indexOf("Linux") == 0;
+    return navigator.platform.indexOf("Linux") == 0 &&
+           navigator.appVersion.indexOf("Android") == -1;
 }
 
 function IsMacOSX10_5orOlder() {