Printing: Convert several wstrings to string16.

chrome/browser/printing/print_job_unittest.cc

Index: chrome/browser/printing/print_job_unittest.cc
diff --git a/chrome/browser/printing/print_job_unittest.cc b/chrome/browser/printing/print_job_unittest.cc
index 87d7efae3b865fefdc7873bbdfdc34b2a032a812..a78d634ea101241d2127d4d3e44de6e70bef16f1 100644
--- a/chrome/browser/printing/print_job_unittest.cc
+++ b/chrome/browser/printing/print_job_unittest.cc
@@ -3,6 +3,7 @@
 // found in the LICENSE file.
 
 #include "base/message_loop.h"
+#include "base/string16.h"
 #include "chrome/browser/printing/print_job.h"
 #include "chrome/browser/printing/print_job_worker.h"
 #include "chrome/common/notification_registrar.h"
@@ -15,8 +16,8 @@ namespace {
 
 class TestSource : public printing::PrintedPagesSource {
  public:
-  virtual std::wstring RenderSourceName() {
-    return L"";
+  virtual string16 RenderSourceName() {
+    return string16();
   }
   virtual GURL RenderSourceUrl() {
     return GURL();