Implement SyncableServices in TemplateURLService. Add related unittests.

chrome/browser/search_engines/template_url_unittest.cc

 // Copyright (c) 2011 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 "base/base_paths.h"
 #include "base/string_util.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/rlz/rlz.h"
 #include "chrome/browser/search_engines/search_terms_data.h"
@@ skipping 134 matching lines @@
   TemplateURLRef ref(
       "http://foo{searchTerms}x{inputEncoding?}y{outputEncoding?}a", 1, 2);
   ASSERT_TRUE(ref.IsValid());
   ASSERT_TRUE(ref.SupportsReplacement());
   GURL result = GURL(ref.ReplaceSearchTerms(t_url, ASCIIToUTF16("X"),
       TemplateURLRef::NO_SUGGESTIONS_AVAILABLE, string16()));
   ASSERT_TRUE(result.is_valid());
   ASSERT_EQ("http://fooxxutf-8ya/", result.spec());
 }
 
+// Test that setting the prepopulate ID from TemplateURL causes the stored
+// TemplateURLRef to handle parsing the URL parameters differently.
 TEST_F(TemplateURLTest, SetPrepopulatedAndParse) {
   TemplateURL t_url;
   t_url.SetURL("http://foo{fhqwhgads}", 0, 0);
   TemplateURLRef::Replacements replacements;
   bool valid = false;
 
   t_url.SetPrepopulateId(0);
   EXPECT_EQ("http://foo{fhqwhgads}",
             t_url.url()->ParseURL("http://foo{fhqwhgads}",
             &replacements,
@@ skipping 405 matching lines @@
 TEST_F(TemplateURLTest, ParseURLNestedParameter) {
   TemplateURLRef url_ref("{%s", 0, 0);
   TemplateURLRef::Replacements replacements;
   bool valid = false;
   EXPECT_EQ("{", url_ref.ParseURL("{{searchTerms}", &replacements, &valid));
   ASSERT_EQ(1U, replacements.size());
   EXPECT_EQ(static_cast<size_t>(1), replacements[0].index);
   EXPECT_EQ(TemplateURLRef::SEARCH_TERMS, replacements[0].type);
   EXPECT_TRUE(valid);
 }