Add a function to escape a query part of url

net/base/url_util_unittest.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "net/base/url_util.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
 #include "url/gurl.h"
 
 namespace net {
@@ skipping 141 matching lines @@
 
   EXPECT_TRUE(it.IsAtEnd());
 }
 
 TEST(UrlUtilTest, ParseQueryInvalidURL) {
   const GURL url("http://%01/?test");
   QueryIterator it(url);
   EXPECT_TRUE(it.IsAtEnd());
 }
 
+TEST(UrlUtilTest, EscapeQueryPart) {
+  EXPECT_EQ("http://example.com/test?q=a%7Cb%7Cc",
+            EscapeQueryParameters(GURL("http://example.com/test?q=a%7Cb%7Cc"))
+                .spec());
+
+  EXPECT_EQ(
+      "http://example.com/test?q=a%7Cb%7Cc",
+      EscapeQueryParameters(GURL("http://example.com/test?q=a|b|c")).spec());
+
+  EXPECT_EQ("http://example.com/test?q=a%7Cb%7Cc&q=1%7C2%7C3",
+            EscapeQueryParameters(
+                GURL("http://example.com/test?q=a|b|c&q=1|2|3")).spec());
+
+  EXPECT_EQ("http://example.com/test?q=a%7Cb%7Cc&q2=1%7C2%7C3",
+            EscapeQueryParameters(
+                GURL("http://example.com/test?q=a|b|c&q2=1|2|3")).spec());
+
+  EXPECT_EQ("http://example.com/",
+            EscapeQueryParameters(GURL("http://example.com/")).spec());
+}
+
 }  // namespace
 }  // namespace net