[Autofill/Autocomplete Feature] Substring matching instead of prefix matching.

base/strings/string_util_unittest.cc

Index: base/strings/string_util_unittest.cc
diff --git a/base/strings/string_util_unittest.cc b/base/strings/string_util_unittest.cc
index d887c0b35db8dce5834d4aacb04d4696e9abeeb9..dc05fc7aa5eca96673bddfe1748349e41be023d2 100644
--- a/base/strings/string_util_unittest.cc
+++ b/base/strings/string_util_unittest.cc
@@ -1232,4 +1232,29 @@ TEST_F(WriteIntoTest, WriteInto) {
   EXPECT_EQ(4u, live.size());
 }
 
+TEST(StringUtilTest, StartsAt) {
+  EXPECT_EQ(0u, StartsAt(ASCIIToUTF16("javascript:url"),
+                         ASCIIToUTF16("javascript"), true));
+  EXPECT_EQ(base::string16::npos, StartsAt(ASCIIToUTF16("JavaScript:url"),
+                                           ASCIIToUTF16("javascript"), true));
+  EXPECT_EQ(0u, StartsAt(ASCIIToUTF16("javascript:url"),
+                         ASCIIToUTF16("javascript"), false));
+  EXPECT_EQ(0u, StartsAt(ASCIIToUTF16("JavaScript:url"),
+                         ASCIIToUTF16("javascript"), false));
+  EXPECT_EQ(11u, StartsAt(ASCIIToUTF16("javascript:url"), ASCIIToUTF16("url"),
+                          false));
+  EXPECT_EQ(4u, StartsAt(ASCIIToUTF16("JavaScript:url"), ASCIIToUTF16("SCRIPT"),
+                         false));
+  EXPECT_EQ(base::string16::npos,
+            StartsAt(ASCIIToUTF16("java"), ASCIIToUTF16("javascript"), true));
+  EXPECT_EQ(base::string16::npos,
+            StartsAt(ASCIIToUTF16("java"), ASCIIToUTF16("javascript"), false));
+  EXPECT_EQ(base::string16::npos,
+            StartsAt(string16(), ASCIIToUTF16("javascript"), false));
+  EXPECT_EQ(base::string16::npos,
+            StartsAt(string16(), ASCIIToUTF16("javascript"), true));
+  EXPECT_EQ(0u, StartsAt(ASCIIToUTF16("java"), string16(), false));
+  EXPECT_EQ(0u, StartsAt(ASCIIToUTF16("java"), string16(), true));
+}
+
 }  // namespace base