Add contextual search to the template url system

chrome/browser/search_engines/template_url_unittest.cc

Index: chrome/browser/search_engines/template_url_unittest.cc
diff --git a/chrome/browser/search_engines/template_url_unittest.cc b/chrome/browser/search_engines/template_url_unittest.cc
index 626b5eb2aabe7fcb3b2ed1604cf20c994098464b..06623df0fbe4ef60838d580a7540163cfe5e6213 100644
--- a/chrome/browser/search_engines/template_url_unittest.cc
+++ b/chrome/browser/search_engines/template_url_unittest.cc
@@ -1358,3 +1358,35 @@ TEST_F(TemplateURLTest, SessionToken) {
   result = url.url_ref().ReplaceSearchTerms(search_terms_args);
   EXPECT_EQ("http://bar/search?q=foo&xssi=t", result);
 }
+
+TEST_F(TemplateURLTest, ContextualSearchParameters) {
+  TemplateURLData data;
+  UIThreadSearchTermsData::SetGoogleBaseURL("http://bar/");
+  data.SetURL("http://bar/_/contextualsearch?"
+              "{google:contextualSearchStart}"
+              "{google:contextualSearchEnd}"
+              "{google:contextualSearchContent}"
+              "{google:contextualSearchEncoding}");
+
+  TemplateURL url(NULL, data);
+  TemplateURLRef::SearchTermsArgs search_terms_args(ASCIIToUTF16("foo"));
+  search_terms_args.contextual_search_start = 12;
+  search_terms_args.contextual_search_end = 20;
+  search_terms_args.contextual_search_content = "woody+allen+movies";
+  search_terms_args.contextual_search_encoding = "utf-8";
+  std::string result = url.url_ref().ReplaceSearchTerms(search_terms_args);
+
+EXPECT_EQ("http://bar/_/contextualsearch?"
+            "ctxs_start=12"
+            "&ctxs_end=20"
+            "&ctxs_content=woody+allen+movies"
+            "&ctxs_encoding=utf-8&", result);
+
+  TemplateURL url2(NULL, data);
+  search_terms_args.contextual_search_start = -12;
+  search_terms_args.contextual_search_end = -20;
+  search_terms_args.contextual_search_content = "";
+  search_terms_args.contextual_search_encoding = "";
+  result = url.url_ref().ReplaceSearchTerms(search_terms_args);
+  EXPECT_EQ("http://bar/_/contextualsearch?", result);
+}