Refactor Autofill for out of process iframes (OOPIF).

components/autofill/content/browser/content_autofill_driver.h

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef COMPONENTS_AUTOFILL_CONTENT_BROWSER_CONTENT_AUTOFILL_DRIVER_H_
 #define COMPONENTS_AUTOFILL_CONTENT_BROWSER_CONTENT_AUTOFILL_DRIVER_H_
 
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/supports_user_data.h"
 #include "components/autofill/content/browser/request_autocomplete_manager.h"
 #include "components/autofill/core/browser/autofill_driver.h"
 #include "components/autofill/core/browser/autofill_external_delegate.h"
 #include "components/autofill/core/browser/autofill_manager.h"
-#include "content/public/browser/web_contents_observer.h"
 
 namespace content {
-class WebContents;
+class BrowserContext;
+class RenderFrameHost;
+struct FrameNavigateParams;
+struct LoadCommittedDetails;
 }
 
 namespace IPC {
 class Message;
 }
 
 namespace autofill {
 
 class AutofillClient;
 
 // Class that drives autofill flow in the browser process based on
 // communication from the renderer and from the external world. There is one
-// instance per WebContents.
-class ContentAutofillDriver : public AutofillDriver,
-                              public content::WebContentsObserver,
-                              public base::SupportsUserData::Data {
+// instance per RenderFrameHost.
+class ContentAutofillDriver : public AutofillDriver {
  public:
-  static void CreateForWebContentsAndDelegate(
-      content::WebContents* contents,
+  ContentAutofillDriver(
+      content::RenderFrameHost* render_frame_host,
       AutofillClient* client,
       const std::string& app_locale,
       AutofillManager::AutofillDownloadManagerState enable_download_manager);
-  static ContentAutofillDriver* FromWebContents(content::WebContents* contents);
+  ~ContentAutofillDriver() override;
 
   // AutofillDriver:
   bool IsOffTheRecord() const override;
   net::URLRequestContextGetter* GetURLRequestContext() override;
   base::SequencedWorkerPool* GetBlockingPool() override;
   bool RendererIsAvailable() override;
   void SendFormDataToRenderer(int query_id,
                               RendererFormDataAction action,
                               const FormData& data) override;
   void PingRenderer() override;
+  void DetectAccountCreationForms(
+      const std::vector<autofill::FormStructure*>& forms) override;
   void SendAutofillTypePredictionsToRenderer(
       const std::vector<FormStructure*>& forms) override;
   void RendererShouldAcceptDataListSuggestion(
       const base::string16& value) override;
   void RendererShouldClearFilledForm() override;
   void RendererShouldClearPreviewedForm() override;
   void RendererShouldFillFieldWithValue(const base::string16& value) override;
   void RendererShouldPreviewFieldWithValue(
       const base::string16& value) override;
 
+  // Handles a message that came from the associated render frame.
+  bool HandleMessage(const IPC::Message& message);
+
+  // Called when the frame has navigated.
+  void DidNavigateFrame(const content::LoadCommittedDetails& details,
+                        const content::FrameNavigateParams& params);
+
   AutofillExternalDelegate* autofill_external_delegate() {
     return &autofill_external_delegate_;
   }
 
   AutofillManager* autofill_manager() { return autofill_manager_.get(); }
+  content::RenderFrameHost* render_frame_host() { return render_frame_host_; }
 
  protected:
-  ContentAutofillDriver(
-      content::WebContents* web_contents,
-      AutofillClient* client,
-      const std::string& app_locale,
-      AutofillManager::AutofillDownloadManagerState enable_download_manager);
-  ~ContentAutofillDriver() override;
-
-  // content::WebContentsObserver:
-  void DidNavigateMainFrame(
-      const content::LoadCommittedDetails& details,
-      const content::FrameNavigateParams& params) override;
-  void NavigationEntryCommitted(
-      const content::LoadCommittedDetails& load_details) override;
-  void WasHidden() override;
-  bool OnMessageReceived(const IPC::Message& message) override;
-
   // Sets the manager to |manager| and sets |manager|'s external delegate
   // to |autofill_external_delegate_|. Takes ownership of |manager|.
   void SetAutofillManager(scoped_ptr<AutofillManager> manager);
 
  private:
+  // Weak ref to the RenderFrameHost the driver is associated with. Should
+  // always be non-NULL and valid for lifetime of |this|.
+  content::RenderFrameHost* const render_frame_host_;
+
+  // The per-tab client.
+  AutofillClient* client_;
+
   // AutofillManager instance via which this object drives the shared Autofill
   // code.
   scoped_ptr<AutofillManager> autofill_manager_;
 
   // AutofillExternalDelegate instance that this object instantiates in the
   // case where the Autofill native UI is enabled.
   AutofillExternalDelegate autofill_external_delegate_;
 
   // Driver for the interactive autocomplete dialog.
   RequestAutocompleteManager request_autocomplete_manager_;
 };
 
 }  // namespace autofill
 
 #endif  // COMPONENTS_AUTOFILL_CONTENT_BROWSER_CONTENT_AUTOFILL_DRIVER_H_