DevTools: remove "type" getters in Resource and NetworkRequest.

LayoutTests/http/tests/inspector/websocket/websocket-frame.html

Index: LayoutTests/http/tests/inspector/websocket/websocket-frame.html
diff --git a/LayoutTests/http/tests/inspector/websocket/websocket-frame.html b/LayoutTests/http/tests/inspector/websocket/websocket-frame.html
index eb7eed3764b074d85a1c4384fd0a9baff62f09f9..96410d49db4a00cf5524f66e358a2b214c594702 100644
--- a/LayoutTests/http/tests/inspector/websocket/websocket-frame.html
+++ b/LayoutTests/http/tests/inspector/websocket/websocket-frame.html
@@ -20,7 +20,7 @@ function test() {
     {
         var request = event.data;
         var done = false;
-        if (request._type._name !== "websocket")
+        if (request.resourceType().name() !== "websocket")
             return;
         var previous_frames = frames;
         frames = [];