Add "previewing on hover" support for password field.

components/autofill/core/browser/password_autofill_manager.cc

Index: components/autofill/core/browser/password_autofill_manager.cc
diff --git a/components/autofill/core/browser/password_autofill_manager.cc b/components/autofill/core/browser/password_autofill_manager.cc
index 730c10e49d5d1b2282440dcf3dd406593cd3977b..ccacf24a636870f884d61d4659aad040b5f761d5 100644
--- a/components/autofill/core/browser/password_autofill_manager.cc
+++ b/components/autofill/core/browser/password_autofill_manager.cc
@@ -20,7 +20,7 @@ PasswordAutofillManager::PasswordAutofillManager(
 PasswordAutofillManager::~PasswordAutofillManager() {
 }
 
-bool PasswordAutofillManager::DidAcceptAutofillSuggestion(
+bool PasswordAutofillManager::DidSelectSuggestion(
     const FormFieldData& field,
     const base::string16& username) {
   PasswordFormFillData password;
@@ -28,7 +28,22 @@ bool PasswordAutofillManager::DidAcceptAutofillSuggestion(
     return false;
 
   if (WillFillUserNameAndPassword(username, password)) {
-    autofill_driver_->RendererShouldAcceptPasswordAutofillSuggestion(username);
+    autofill_driver_->RendererShouldPreviewPassword(username);
+    return true;
+  }
+
+  return false;
+ }
+
+bool PasswordAutofillManager::DidAcceptSuggestion(
+    const FormFieldData& field,
+    const base::string16& username) {
+  PasswordFormFillData password;
+  if (!FindLoginInfo(field, &password))
+    return false;
+
+  if (WillFillUserNameAndPassword(username, password)) {
+    autofill_driver_->RendererShouldFillPassword(username);
     return true;
   }