Add NaCl smoke test to browser_tests.

chrome/test/base/ui_test_utils.h

Index: chrome/test/base/ui_test_utils.h
diff --git a/chrome/test/base/ui_test_utils.h b/chrome/test/base/ui_test_utils.h
index d500c90336599ccb1f88b3356df5014995115be4..d1f3cab36c4bb078e8861b621462b0b8c979c209 100644
--- a/chrome/test/base/ui_test_utils.h
+++ b/chrome/test/base/ui_test_utils.h
@@ -130,6 +130,9 @@ FilePath GetTestFilePath(const FilePath& dir, const FilePath& file);
 // The returned path is GURL format.
 GURL GetTestUrl(const FilePath& dir, const FilePath& file);
 
+// Generate the path of the build directory, relative to the source root.
+bool GetRelativeBuildDirectory(FilePath *build_dir);
+
 // Blocks until an application modal dialog is showns and returns it.
 AppModalDialog* WaitForAppModalDialog();