Media: zIndex peace was only temporary.

Revert [22611] in favor of using plupload's `container` setting. Turns out, plupload's flash shim is forced to the exact same index as the admin bar, so balancing the two is better solved by nesting the shim.

see #22441, #22446, #21390.


git-svn-id: http://core.svn.wordpress.org/trunk@22612 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-includes/css/media-views.css

@@ -24,7 +24,7 @@
 	left: 40px;
 	right: 40px;
 	bottom: 40px;
-	z-index: 50000;
+	z-index: 125000;
 }
 
 .media-modal-backdrop {
@@ -35,7 +35,7 @@
 	bottom: 0;
 	background: #000;
 	opacity: 0.8;
-	z-index: 40000;
+	z-index: 120000;
 }
 
 .media-modal-backdrop div {
@@ -671,7 +671,7 @@
 	bottom: 0;
 	background: rgba( 0, 86, 132, 0.9 );
 
-	z-index: 200000;
+	z-index: 250000;
 	display: none;
 	text-align: center;
 	opacity: 0;