[autofill] Adding new API to request an interactive autocomplete UI flow.

chrome/browser/autofill/autofill_manager.cc

Index: chrome/browser/autofill/autofill_manager.cc
diff --git a/chrome/browser/autofill/autofill_manager.cc b/chrome/browser/autofill/autofill_manager.cc
index dbf2037af209eb8fb6227890b5ca853243ef79c5..61da5bd22b5a7ae32cdbe4fbaf4d63475b7687f5 100644
--- a/chrome/browser/autofill/autofill_manager.cc
+++ b/chrome/browser/autofill/autofill_manager.cc
@@ -58,6 +58,7 @@
 #include "grit/generated_resources.h"
 #include "ipc/ipc_message_macros.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebAutofillClient.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebFormElement.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/gfx/rect.h"
 
@@ -360,6 +361,8 @@ bool AutofillManager::OnMessageReceived(const IPC::Message& message) {
                         OnShowPasswordSuggestions)
     IPC_MESSAGE_HANDLER(AutofillHostMsg_SetDataList,
                         OnSetDataList)
+    IPC_MESSAGE_HANDLER(AutofillHostMsg_RequestAutocomplete,
+                        OnRequestAutocomplete)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
 
@@ -797,6 +800,22 @@ void AutofillManager::OnSetDataList(const std::vector<string16>& values,
   }
 }
 
+void AutofillManager::OnRequestAutocomplete(int unique_id,
+                                            const FormData& form) {
+  // TODO(dbeam): implement interactive autocomplete UI.
+
+  RenderViewHost* host = web_contents()->GetRenderViewHost();
+  if (!host)
+    return;
+
+  // Just send an error right away until webkit changes land
+  // (https://bugs.webkit.org/show_bug.cgi?id=100557).

[Evan Stade, 2012/10/29 17:54:28]

nit: it doesn't depend on webkit. It's more like "until we have an
implementation".

[Dan Beam, 2012/10/29 19:17:05]

Done.

+  host->Send(new AutofillMsg_RequestAutocompleteFinished(
+      host->GetRoutingID(),
+      unique_id,
+      WebKit::WebFormElement::AutocompleteError));
+}
+
 void AutofillManager::OnLoadedServerPredictions(
     const std::string& response_xml) {
   // Parse and store the server predictions.