fix NPE while launch http://code.google.com/p/dart/issues/detail?id=3510

editor/tools/plugins/com.google.dart.tools.debug.core/src/com/google/dart/tools/debug/core/util/BrowserManager.java

Index: editor/tools/plugins/com.google.dart.tools.debug.core/src/com/google/dart/tools/debug/core/util/BrowserManager.java
===================================================================
--- editor/tools/plugins/com.google.dart.tools.debug.core/src/com/google/dart/tools/debug/core/util/BrowserManager.java	(revision 8852)
+++ editor/tools/plugins/com.google.dart.tools.debug.core/src/com/google/dart/tools/debug/core/util/BrowserManager.java	(working copy)
@@ -172,9 +172,6 @@
           devToolsPortNumber);
     }
 
-    stdout = readFromProcessPipes(browserName, browserProcess.getInputStream());
-    stderr = readFromProcessPipes(browserName, browserProcess.getErrorStream());
-
     BrowserHelper.activateApplication(dartium);
 
     timer.stopTask();
@@ -583,6 +580,8 @@
     }
 
     browserProcess = process;
+    stdout = readFromProcessPipes(browserName, browserProcess.getInputStream());
+    stderr = readFromProcessPipes(browserName, browserProcess.getErrorStream());
   }
 
   private void terminateExistingBrowserProcess() {