DevTools: make extension server a part of core, panels' code should depend on it.

LayoutTests/http/tests/inspector/extensions-test.js

Index: LayoutTests/http/tests/inspector/extensions-test.js
diff --git a/LayoutTests/http/tests/inspector/extensions-test.js b/LayoutTests/http/tests/inspector/extensions-test.js
index 8b5ebfca7033fc6878f15c771d06b116b71b01ab..30bbb00c50ad183a513425d21152a375b64374ba 100644
--- a/LayoutTests/http/tests/inspector/extensions-test.js
+++ b/LayoutTests/http/tests/inspector/extensions-test.js
@@ -12,9 +12,9 @@ function extensionFunctions()
 var initialize_ExtensionsTest = function()
 {
 
-WebInspector.extensionServerProxy._overridePlatformExtensionAPIForTest = function(extensionInfo)
+WebInspector.extensionServer._overridePlatformExtensionAPIForTest = function(extensionInfo)
 {
-    WebInspector.extensionServerProxy._extensionServer._registerHandler("evaluateForTestInFrontEnd", onEvaluate);
+    WebInspector.extensionServer._registerHandler("evaluateForTestInFrontEnd", onEvaluate);
 
     function platformExtensionAPI(coreAPI)
     {
@@ -33,7 +33,7 @@ function onEvaluate(message, port)
 {
     function reply(param)
     {
-        WebInspector.extensionServerProxy._extensionServer._dispatchCallback(message.requestId, port, param);
+        WebInspector.extensionServer._dispatchCallback(message.requestId, port, param);
     }
 
     try {
@@ -53,7 +53,6 @@ InspectorTest.showPanel = function(panelId)
 
 InspectorTest.runExtensionTests = function()
 {
-    WebInspector.extensionServerProxy.setFrontendReady();
     RuntimeAgent.evaluate("location.href", "console", false, function(error, result) {
         if (error)
             return;