Generate passwords only for forms that autofill server marks as account creation forms.

chrome/browser/password_manager/password_generation_manager.cc

Index: chrome/browser/password_manager/password_generation_manager.cc
diff --git a/chrome/browser/password_manager/password_generation_manager.cc b/chrome/browser/password_manager/password_generation_manager.cc
index e53f61a7b682589a664f9ab33aa35e8a7133edcd..7db7936c1b42e3630269eb8c865608dbaf01bfae 100644
--- a/chrome/browser/password_manager/password_generation_manager.cc
+++ b/chrome/browser/password_manager/password_generation_manager.cc
@@ -13,8 +13,12 @@
 #include "chrome/browser/ui/browser_finder.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/common/pref_names.h"
+#include "components/autofill/core/browser/autofill_field.h"
+#include "components/autofill/core/browser/field_types.h"
+#include "components/autofill/core/browser/form_structure.h"
 #include "components/autofill/core/browser/password_generator.h"
 #include "components/autofill/core/common/autofill_messages.h"
+#include "components/autofill/core/common/form_data.h"
 #include "components/user_prefs/pref_registry_syncable.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/render_view_host.h"
@@ -55,6 +59,25 @@ void PasswordGenerationManager::RegisterProfilePrefs(
       user_prefs::PrefRegistrySyncable::SYNCABLE_PREF);
 }
 
+void PasswordGenerationManager::DetectAccountCreationForms(
+    const std::vector<autofill::FormStructure*>& forms) {
+  std::vector<autofill::FormData> account_creation_forms;
+  for (std::vector<autofill::FormStructure*>::const_iterator form_it =
+           forms.begin(); form_it != forms.end(); ++form_it) {
+    autofill::FormStructure* form = *form_it;
+    for (std::vector<autofill::AutofillField*>::const_iterator field_it =
+             form->begin(); field_it != form->end(); ++field_it) {
+      autofill::AutofillField* field = *field_it;
+      if (field->server_type() == autofill::ACCOUNT_CREATION_PASSWORD) {
+        account_creation_forms.push_back(form->ToFormData());
+        break;
+      }
+    }
+  }
+  SendAccountCreationFormsToRenderer(web_contents()->GetRenderViewHost(),
+                                     account_creation_forms);
+}
+
 void PasswordGenerationManager::RegisterWithSyncService() {
   Profile* profile = Profile::FromBrowserContext(
       web_contents()->GetBrowserContext());
@@ -151,6 +174,13 @@ void PasswordGenerationManager::SendStateToRenderer(
                                                        enabled));
 }
 
+void PasswordGenerationManager::SendAccountCreationFormsToRenderer(
+    content::RenderViewHost* host,
+    const std::vector<autofill::FormData>& forms) {
+  host->Send(new AutofillMsg_AccountCreationFormsDetected(
+      host->GetRoutingID(), forms));
+}
+
 void PasswordGenerationManager::OnShowPasswordGenerationPopup(
     const gfx::Rect& bounds,
     int max_length,