add experiment support and add urlprefix for autocheckout.

chrome/browser/autofill/form_structure_unittest.cc

Index: chrome/browser/autofill/form_structure_unittest.cc
diff --git a/chrome/browser/autofill/form_structure_unittest.cc b/chrome/browser/autofill/form_structure_unittest.cc
index 6dafc1ac6efad63c24dea3c3fe9d3927e511a473..4df25ea835b31b2f59dbfb917c25ce38abbcae22 100644
--- a/chrome/browser/autofill/form_structure_unittest.cc
+++ b/chrome/browser/autofill/form_structure_unittest.cc
@@ -1574,19 +1574,21 @@ TEST(FormStructureTest, EncodeQueryRequest) {
   EXPECT_EQ(0U, encoded_signatures.size());
   EXPECT_EQ("", encoded_xml);
 
-  // Check the behaviour with kEnableExperimentalFormFilling switch on.
-  // Add the previous form but with flag set.
+  // Check the behaviour with autocheckout enabled.
   ScopedVector<FormStructure> checkable_forms;
+  form.origin = GURL("https://www.sample1.com/query/path");
   checkable_forms.push_back(new FormStructure(form, true));
 
   ASSERT_TRUE(FormStructure::EncodeQueryRequest(checkable_forms.get(),
                                                 &encoded_signatures,
                                                 &encoded_xml));
-  const char * const kSignature3 = "7747357776717901584";
+  const char * const kSignature3 = "10816570822443282449";
   const char * const kResponse3 =
       "<?xml version=\"1.0\" encoding=\"UTF-8\"?><autofillquery "
-      "clientversion=\"6.1.1715.1442/en (GGLL)\" accepts=\"e\">"
-      "<form signature=\"7747357776717901584\"><field signature=\"412125936\"/>"
+      "clientversion=\"6.1.1715.1442/en (GGLL)\" accepts=\"a\" "
+      "urlprefix=\"https://www.sample1.com/query/path\">"
+      "<form signature=\"10816570822443282449\">"
+      "<field signature=\"412125936\"/>"
       "<field signature=\"1917667676\"/><field signature=\"2226358947\"/><field"
       " signature=\"747221617\"/><field signature=\"4108155786\"/><field "
       "signature=\"3410250678\"/><field signature=\"509334676\"/><field "
@@ -1596,6 +1598,20 @@ TEST(FormStructureTest, EncodeQueryRequest) {
   ASSERT_EQ(1U, encoded_signatures.size());
   EXPECT_EQ(kSignature3, encoded_signatures[0]);
   EXPECT_EQ(kResponse3, encoded_xml);
+
+  // Check the behaviour with autocheckout enabled.
+  // It should remove query parameters and the encoded_xml should be same
+  // as previous test.
+  ScopedVector<FormStructure> checkable_forms2;
+  form.origin = GURL("https://www.sample1.com/query/path?a=b&c=d");
+  checkable_forms2.push_back(new FormStructure(form, true));
+
+  ASSERT_TRUE(FormStructure::EncodeQueryRequest(checkable_forms2.get(),
+                                                &encoded_signatures,
+                                                &encoded_xml));
+  ASSERT_EQ(1U, encoded_signatures.size());
+  EXPECT_EQ(kSignature3, encoded_signatures[0]);
+  EXPECT_EQ(kResponse3, encoded_xml);
 }
 
 TEST(FormStructureTest, EncodeUploadRequest) {