Add "previewing on hover" support for password field.

components/password_manager/content/browser/content_password_manager_driver.cc

Index: components/password_manager/content/browser/content_password_manager_driver.cc
diff --git a/components/password_manager/content/browser/content_password_manager_driver.cc b/components/password_manager/content/browser/content_password_manager_driver.cc
index 6ef6916e80fee04257adb5e197b34376dba8bacc..0a4b88a34f27ee1fe98d10d2c585da75dae215d2 100644
--- a/components/password_manager/content/browser/content_password_manager_driver.cc
+++ b/components/password_manager/content/browser/content_password_manager_driver.cc
@@ -64,6 +64,22 @@ void ContentPasswordManagerDriver::AcceptPasswordAutofillSuggestion(
                                                        password));
 }
 
+void ContentPasswordManagerDriver::PreviewPasswordAutofillSuggestion(
+    const base::string16& username,
+    const base::string16& password) {
+  content::RenderViewHost* host = web_contents()->GetRenderViewHost();
+  host->Send(
+      new AutofillMsg_PreviewPasswordAutofillSuggestion(host->GetRoutingID(),
+                                                        username,
+                                                        password));
+}
+
+void ContentPasswordManagerDriver::ClearPasswordPreviewedForm() {
+  content::RenderViewHost* host = web_contents()->GetRenderViewHost();
+  host->Send(
+      new AutofillMsg_ClearPreviewedForm(host->GetRoutingID()));
+}
+
 bool ContentPasswordManagerDriver::DidLastPageLoadEncounterSSLErrors() {
   DCHECK(web_contents());
   content::NavigationEntry* entry =