Abstracted AcceptPasswordAutofillSuggestion IPC out of core Autofill code.

components/autofill/core/browser/test_autofill_driver.cc

Index: components/autofill/core/browser/test_autofill_driver.cc
diff --git a/components/autofill/core/browser/test_autofill_driver.cc b/components/autofill/core/browser/test_autofill_driver.cc
index a2cd662fb0746c1cf7d9f74605e74acc8d1cf285..780c01a942dcf63b9cc430b60018987cbc4864c8 100644
--- a/components/autofill/core/browser/test_autofill_driver.cc
+++ b/components/autofill/core/browser/test_autofill_driver.cc
@@ -53,6 +53,10 @@ void TestAutofillDriver::RendererShouldAcceptDataListSuggestion(
     const base::string16& value) {
 }
 
+void TestAutofillDriver::RendererShouldAcceptPasswordAutofillSuggestion(
+    const base::string16& username) {
+}
+
 void TestAutofillDriver::RendererShouldClearFilledForm() {
 }