fix npe issue #81

plugins/org.chromium.sdk.wipbackend.dev/src/org/chromium/sdk/internal/wip/WipBackendImpl.java

Index: plugins/org.chromium.sdk.wipbackend.dev/src/org/chromium/sdk/internal/wip/WipBackendImpl.java
diff --git a/plugins/org.chromium.sdk.wipbackend.dev/src/org/chromium/sdk/internal/wip/WipBackendImpl.java b/plugins/org.chromium.sdk.wipbackend.dev/src/org/chromium/sdk/internal/wip/WipBackendImpl.java
index 2c13e3bc3194f00c0d50d1232ca2b6856e96b351..72dae21ff62bf9d25d5df02c91eca900575e6261 100644
--- a/plugins/org.chromium.sdk.wipbackend.dev/src/org/chromium/sdk/internal/wip/WipBackendImpl.java
+++ b/plugins/org.chromium.sdk.wipbackend.dev/src/org/chromium/sdk/internal/wip/WipBackendImpl.java
@@ -125,7 +125,12 @@ public class WipBackendImpl extends WipBackendBase {
 
   private String readHttpResponseContent(InetSocketAddress socketAddress, String resource,
       LoggerFactory loggerFactory) throws IOException {
-    ConnectionLogger browserConnectionLogger = loggerFactory.newBrowserConnectionLogger();
+    ConnectionLogger browserConnectionLogger;
+    if (loggerFactory == null) {
+      browserConnectionLogger = null;
+    } else {
+      browserConnectionLogger = loggerFactory.newBrowserConnectionLogger();
+    }
     final SocketWrapper socketWrapper = new SocketWrapper(
         socketAddress, DEFAULT_CONNECTION_TIMEOUT_MS, browserConnectionLogger,
         HandshakeUtil.ASCII_CHARSET);