It seems GAIA had changed dosserver rules today, so we can go back to accounts.google.com.

chrome/common/net/url_util_unittest.cc

 // Copyright (c) 2012 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 "chrome/common/net/url_util.h"
 
 #include "googleurl/src/gurl.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace chrome_common_net {
@@ skipping 62 matching lines @@
   // Preserve the content of the original params regarless of our failure to
   // interpret them correctly.
   EXPECT_EQ("http://example.com/path?bar&name=new&left=&"
             "=right&=&&name=again",
       AppendOrReplaceQueryParameter(
           GURL("http://example.com/path?bar&name=old&left=&"
                 "=right&=&&name=again"),
           "name", "new").spec());
 }
 
+TEST(BrowserUrlUtilTest, GetValueForKeyInQuery) {
+  GURL url("http://example.com/path?name=value&boolParam&"
+           "url=http://test.com/q?n1%3Dv1%26n2");
+  std::string value;
+
+  // False when getting a non-existent query param.
+  EXPECT_FALSE(GetValueForKeyInQuery(url, "non-exist", &value));
+
+  // True when query param exist.
+  EXPECT_TRUE(GetValueForKeyInQuery(url, "name", &value));
+  EXPECT_EQ("value", value);
+
+  EXPECT_TRUE(GetValueForKeyInQuery(url, "boolParam", &value));
+  EXPECT_EQ("", value);
+
+  EXPECT_TRUE(GetValueForKeyInQuery(url, "url", &value));
+  EXPECT_EQ("http://test.com/q?n1=v1&n2", value);
+}
+
 }  // namespace chrome_common_net.