WebView autofill implementation

components/autofill/content/browser/content_autofill_driver.h

Index: components/autofill/content/browser/content_autofill_driver.h
diff --git a/components/autofill/content/browser/content_autofill_driver.h b/components/autofill/content/browser/content_autofill_driver.h
index f0ddceb63d920461c5023064124bb6e4b2d53aa8..ab5a006db0469db7ba50ca7b4418f491d8c707ed 100644
--- a/components/autofill/content/browser/content_autofill_driver.h
+++ b/components/autofill/content/browser/content_autofill_driver.h
@@ -25,6 +25,7 @@ class RenderFrameHost;
 namespace autofill {
 
 class AutofillClient;
+class AutofillProvider;
 
 // Class that drives autofill flow in the browser process based on
 // communication from the renderer and from the external world. There is one
@@ -37,7 +38,8 @@ class ContentAutofillDriver : public AutofillDriver,
       content::RenderFrameHost* render_frame_host,
       AutofillClient* client,
       const std::string& app_locale,
-      AutofillManager::AutofillDownloadManagerState enable_download_manager);
+      AutofillManager::AutofillDownloadManagerState enable_download_manager,
+      AutofillProvider* provider);
   ~ContentAutofillDriver() override;
 
   // Gets the driver for |render_frame_host|.
@@ -94,10 +96,10 @@ class ContentAutofillDriver : public AutofillDriver,
   void DidNavigateFrame(content::NavigationHandle* navigation_handle);
 
   AutofillExternalDelegate* autofill_external_delegate() {
-    return &autofill_external_delegate_;
+    return autofill_external_delegate_.get();
   }
 
-  AutofillManager* autofill_manager() { return autofill_manager_.get(); }
+  AutofillManager* autofill_manager() { return autofill_manager_; }
   content::RenderFrameHost* render_frame_host() { return render_frame_host_; }
 
   const mojom::AutofillAgentPtr& GetAutofillAgent();
@@ -123,13 +125,16 @@ class ContentAutofillDriver : public AutofillDriver,
   // always be non-NULL and valid for lifetime of |this|.
   content::RenderFrameHost* const render_frame_host_;
 
-  // AutofillManager instance via which this object drives the shared Autofill
+  // AutofillHandler instance via which this object drives the shared Autofill
   // code.
-  std::unique_ptr<AutofillManager> autofill_manager_;
+  std::unique_ptr<AutofillHandler> autofill_handler_;
+
+  // The pointer to autofill_handler_ if it is AutofillManager instance.
+  AutofillManager* autofill_manager_;
 
   // AutofillExternalDelegate instance that this object instantiates in the
   // case where the Autofill native UI is enabled.
-  AutofillExternalDelegate autofill_external_delegate_;
+  std::unique_ptr<AutofillExternalDelegate> autofill_external_delegate_;
 
   KeyPressHandlerManager key_press_handler_manager_;