[DevTools] Refactor connection-related classes.

third_party/WebKit/LayoutTests/inspector/report-API-errors.html

Index: third_party/WebKit/LayoutTests/inspector/report-API-errors.html
diff --git a/third_party/WebKit/LayoutTests/inspector/report-API-errors.html b/third_party/WebKit/LayoutTests/inspector/report-API-errors.html
index 3ba297fdc3ef52cc929db2d328b3c6d318389777..481ec0970ae096bbe2217af62b146cb8cc3bd83b 100644
--- a/third_party/WebKit/LayoutTests/inspector/report-API-errors.html
+++ b/third_party/WebKit/LayoutTests/inspector/report-API-errors.html
@@ -18,8 +18,8 @@ function test()
     InspectorTest.RuntimeAgent.evaluate("true", "test");
     InspectorTest.RuntimeAgent.evaluate("true", "test", function(){});
     InspectorTest.RuntimeAgent.evaluate("true", "test", undefined, function(){});
-    InspectorTest.connection.dispatch('{"method": "wrongDomain.something-strange", "params": {}}');
-    InspectorTest.connection.dispatch('{"method": "Inspector.something-strange", "params": {}}');
+    InspectorTest.connection._messageReceived({data: '{"method": "wrongDomain.something-strange", "params": {}}'});
+    InspectorTest.connection._messageReceived({data: '{"method": "Inspector.something-strange", "params": {}}'});
 
     InspectorTest.completeTest();
 }