DevTools: Support XHR event listener breakpoints on frontend.

LayoutTests/inspector/sources/debugger/event-listener-breakpoints.html

Index: LayoutTests/inspector/sources/debugger/event-listener-breakpoints.html
diff --git a/LayoutTests/inspector/sources/debugger/event-listener-breakpoints.html b/LayoutTests/inspector/sources/debugger/event-listener-breakpoints.html
index c3ade10a218a559b86b86764c832f38839241e96..74e3778bd1064ed5f7f30eb80b34cf824e793398 100644
--- a/LayoutTests/inspector/sources/debugger/event-listener-breakpoints.html
+++ b/LayoutTests/inspector/sources/debugger/event-listener-breakpoints.html
@@ -85,8 +85,8 @@ function test()
 
         function testLoadBreakpointOnXHR(next)
         {
-            DOMDebuggerAgent.setEventListenerBreakpoint("load", "xmlHTTPrequest"); // test case-insensitive match
-            DOMDebuggerAgent.setEventListenerBreakpoint("error", "XMLHttpRequest");
+            pane._setBreakpoint("listener:load", ["xmlHTTPrequest"]); // test case-insensitive match
+            pane._setBreakpoint("listener:error", ["XMLHttpRequest"]);
             InspectorTest.waitUntilPaused(paused);
             InspectorTest.evaluateInPageWithTimeout("addLoadListeners()");
 
@@ -94,8 +94,8 @@ function test()
             {
                 InspectorTest.captureStackTrace(callFrames);
                 printEventTargetName(auxData);
-                DOMDebuggerAgent.removeEventListenerBreakpoint("load", "XMLHttpRequest");
-                DOMDebuggerAgent.removeEventListenerBreakpoint("error", "xmlHTTPrequest");
+                pane._removeBreakpoint("listener:load", ["XMLHttpRequest"]);
+                pane._removeBreakpoint("listener:error", ["xmlHTTPrequest"]);
                 InspectorTest.resumeExecution(resumed);
             }