Bug 741166 - Add clarifying comment. DONTBUILD

--HG--
extra : rebase_source : 4d2e524732e6a02d99f3c2b68d4ac066399b61b3

mobile/android/base/gfx/GLController.java

@@ -115,6 +115,8 @@ public class GLController {
         return true;
     }
 
+    // Wait until we are allowed to use EGL functions on the Surface backing
+    // this window.
     public synchronized void waitForValidSurface() {
         while (!mSurfaceValid) {
             try {