Cleanup: Convert ASCIIToUTF16("") to string16().

webkit/plugins/npapi/plugin_list_unittest.cc

Index: webkit/plugins/npapi/plugin_list_unittest.cc
diff --git a/webkit/plugins/npapi/plugin_list_unittest.cc b/webkit/plugins/npapi/plugin_list_unittest.cc
index 6298cefff427bfb41065691ec5618c031b4c5254..6f152d9215af4646c83f0be059119705e84254be 100644
--- a/webkit/plugins/npapi/plugin_list_unittest.cc
+++ b/webkit/plugins/npapi/plugin_list_unittest.cc
@@ -4,6 +4,7 @@
 
 #include "webkit/plugins/npapi/plugin_list.h"
 
+#include "base/string16.h"
 #include "base/utf_string_conversions.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "webkit/plugins/npapi/mock_plugin_list.h"
@@ -96,10 +97,9 @@ TEST_F(PluginListTest, EmptyGroup) {
 }
 
 TEST_F(PluginListTest, BadPluginDescription) {
-  WebPluginInfo plugin_3043(ASCIIToUTF16(""),
-                            FilePath(FILE_PATH_LITERAL("/myplugin.3.0.43")),
-                            ASCIIToUTF16(""),
-                            ASCIIToUTF16(""));
+  WebPluginInfo plugin_3043(
+      string16(), FilePath(FILE_PATH_LITERAL("/myplugin.3.0.43")),
+      string16(), string16());
   // Simulate loading of the plugins.
   plugin_list_.ClearPluginsToLoad();
   plugin_list_.AddPluginToLoad(plugin_3043);