Fix an issue resolving paths when remote debugging.

editor/tools/plugins/com.google.dart.tools.debug.core/src/com/google/dart/tools/debug/core/configs/DartServerLaunchConfigurationDelegate.java

Index: editor/tools/plugins/com.google.dart.tools.debug.core/src/com/google/dart/tools/debug/core/configs/DartServerLaunchConfigurationDelegate.java
===================================================================
--- editor/tools/plugins/com.google.dart.tools.debug.core/src/com/google/dart/tools/debug/core/configs/DartServerLaunchConfigurationDelegate.java	(revision 41867)
+++ editor/tools/plugins/com.google.dart.tools.debug.core/src/com/google/dart/tools/debug/core/configs/DartServerLaunchConfigurationDelegate.java	(working copy)
@@ -28,7 +28,7 @@
 import com.google.dart.tools.debug.core.util.IRemoteConnectionDelegate;
 
 import org.apache.commons.lang3.ObjectUtils;
-import org.eclipse.core.resources.IFile;
+import org.eclipse.core.resources.IContainer;
 import org.eclipse.core.resources.IResource;
 import org.eclipse.core.resources.ResourcesPlugin;
 import org.eclipse.core.runtime.CoreException;
@@ -94,7 +94,7 @@
   }
 
   @Override
-  public IDebugTarget performRemoteConnection(String host, int port, IFile file,
+  public IDebugTarget performRemoteConnection(String host, int port, IContainer container,
       IProgressMonitor monitor, boolean usePubServe) throws CoreException {
     if (monitor == null) {
       monitor = new NullProgressMonitor();
@@ -107,10 +107,10 @@
     monitor.beginTask("Opening Connection...", 1);
 
     try {
-      if (file != null) {
+      if (container != null) {
         ILaunchConfiguration launchConfiguration = launch.getLaunchConfiguration();
         DartLaunchConfigWrapper wrapper = new DartLaunchConfigWrapper(launchConfiguration);
-        wrapper.setApplicationName(file.getFullPath().toPortableString());
+        wrapper.setSourceDirectoryName(container.getFullPath().toPortableString());
       }
 
       CoreLaunchUtils.addLaunch(launch);