Improve Autofill heuristics when detecting labels from previous elements.

chrome/browser/autofill/form_structure_browsertest.cc

Index: chrome/browser/autofill/form_structure_browsertest.cc
diff --git a/chrome/browser/autofill/form_structure_browsertest.cc b/chrome/browser/autofill/form_structure_browsertest.cc
index 37f676bdba39906cba238826e7584d2462d3ee2d..2e7264d8b4d83bf41361d6bcd32a0ca7d15440f2 100644
--- a/chrome/browser/autofill/form_structure_browsertest.cc
+++ b/chrome/browser/autofill/form_structure_browsertest.cc
@@ -219,6 +219,14 @@ IN_PROC_BROWSER_TEST_F(FormStructureBrowserTest,
 }
 
 IN_PROC_BROWSER_TEST_F(FormStructureBrowserTest,
+    MAYBE_DataDrivenHeuristics(16)) {
+  const FilePath::CharType kFileNamePattern[] = FILE_PATH_LITERAL("16_*.html");
+  RunDataDrivenTest(GetInputDirectory(kTestName),
+                    GetOutputDirectory(kTestName),
+                    kFileNamePattern);
+}
+
+IN_PROC_BROWSER_TEST_F(FormStructureBrowserTest,
     MAYBE_DataDrivenHeuristics(20)) {
   const FilePath::CharType kFileNamePattern[] = FILE_PATH_LITERAL("20_*.html");
   RunDataDrivenTest(GetInputDirectory(kTestName),