Initialize AudioContext on constructor to increase currentTime in real-time.

LayoutTests/webaudio/audiocontext-max-contexts.html

Index: LayoutTests/webaudio/audiocontext-max-contexts.html
diff --git a/LayoutTests/webaudio/audiocontext-max-contexts.html b/LayoutTests/webaudio/audiocontext-max-contexts.html
index 8337e9284030ac54f1ecff126a62c3debb97540f..256f237a4ec003a11b2ba9c330bceb4e453a35f4 100644
--- a/LayoutTests/webaudio/audiocontext-max-contexts.html
+++ b/LayoutTests/webaudio/audiocontext-max-contexts.html
@@ -10,11 +10,8 @@ description("Check that the AudioContext constructor throws when the limit on ha
 
 function reachHardwareContextsLimit() {
     var context = [];
-    for (var i=0; i<10; ++i) {
+    for (var i=0; i<10; ++i)
         context[i] = new AudioContext();
-        // Trigger lazy initialization.
-        context[i].createBufferSource();
-    }
 }
 
 shouldThrow("reachHardwareContextsLimit()");