Requery the autofill server when forms and input fields are dynamically added.

chrome/renderer/autofill/autofill_renderer_browsertest.cc

Index: chrome/renderer/autofill/autofill_renderer_browsertest.cc
diff --git a/chrome/renderer/autofill/autofill_renderer_browsertest.cc b/chrome/renderer/autofill/autofill_renderer_browsertest.cc
index c09c4c2b164e05ec10336ccda428e5801dad0da7..584d5084b3ab5d5c36a4b44e17e959207993f7c8 100644
--- a/chrome/renderer/autofill/autofill_renderer_browsertest.cc
+++ b/chrome/renderer/autofill/autofill_renderer_browsertest.cc
@@ -25,7 +25,7 @@ TEST_F(ChromeRenderViewTest, SendForms) {
   // loop, it will generate an update.
   SendContentStateImmediately();
 
-  LoadHTML("<form method=\"POST\">"
+  LoadHTML("<form method=\"POST\" id=\"testform\">"
            "  <input type=\"text\" id=\"firstname\"/>"
            "  <input type=\"text\" id=\"middlename\"/>"
            "  <input type=\"text\" id=\"lastname\" autoComplete=\"off\"/>"
@@ -123,6 +123,28 @@ TEST_F(ChromeRenderViewTest, SendForms) {
   expected.form_control_type = "select-one";
   expected.max_length = 0;
   EXPECT_FORM_FIELD_DATA_EQUALS(expected, form2.fields[2]);
+
+  autofill_agent_->OnWhitelistedForAutocheckout();

[ahutter, 2013/03/29 19:48:31]

Might want to make this a new TEST_F

[Dane Wallinga, 2013/03/29 21:41:12]

Done.

+  render_thread_->sink().ClearMessages();
+  ExecuteJavaScript("newInput=document.createElement(\"input\");"

[ahutter, 2013/03/29 19:48:31]

nit but should this be "var newInput="

[Dane Wallinga, 2013/03/29 21:41:12]

Done.

+                    "newInput.setAttribute(\"type\",\"text\");"
+                    "newInput.setAttribute(\"id\", \"telephone\");"
+                    "document.getElementById(\"testform\").appendChild(newInput);");
+  msg_loop_.RunUntilIdle();
+  // Verify that FormsSeen is resent with the new field.
+  const IPC::Message* message3 = render_thread_->sink().GetFirstMessageMatching(
+      AutofillHostMsg_FormsSeen::ID);
+  ASSERT_NE(static_cast<IPC::Message*>(NULL), message3);
+  AutofillHostMsg_FormsSeen::Read(message3, &params);
+  const std::vector<FormData>& new_forms = params.a;
+  ASSERT_EQ(1UL, new_forms.size());
+  ASSERT_EQ(5UL, new_forms[0].fields.size());
+
+  expected.name = ASCIIToUTF16("telephone");
+  expected.value = string16();
+  expected.form_control_type = "text";
+  expected.max_length = WebInputElement::defaultMaxLength();
+  EXPECT_FORM_FIELD_DATA_EQUALS(expected, forms[0].fields[4]);
 }
 
 TEST_F(ChromeRenderViewTest, FillFormElement) {