[Autofill] Migrate ContentAutofillDriver<-->AutofillAgent IPCs to mojo.

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 <memory>
 #include <string>
 
 #include "base/supports_user_data.h"
 #include "components/autofill/content/public/interfaces/autofill_agent.mojom.h"
 #include "components/autofill/content/public/interfaces/autofill_driver.mojom.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 "mojo/public/cpp/bindings/binding_set.h"
+#include "mojo/public/cpp/bindings/binding.h"
 
 namespace content {
 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 RenderFrameHost.
 class ContentAutofillDriver : public AutofillDriver,
                               public mojom::AutofillDriver {
  public:
   ContentAutofillDriver(
       content::RenderFrameHost* render_frame_host,
       AutofillClient* client,
       const std::string& app_locale,
       AutofillManager::AutofillDownloadManagerState enable_download_manager);
   ~ContentAutofillDriver() override;
 
+  // Gets the driver for |render_frame_host|.
+  static ContentAutofillDriver* GetForRenderFrameHost(
+      content::RenderFrameHost* render_frame_host);
+
   void BindRequest(mojom::AutofillDriverRequest request);
 
   // 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 PropagateAutofillPredictions(
       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;
   void PopupHidden() override;
   gfx::RectF TransformBoundingBoxToViewportCoordinates(
       const gfx::RectF& bounding_box) override;
 
   // mojom::AutofillDriver:
   void FirstUserGestureObserved() override;
-
-  // Handles a message that came from the associated render frame.
-  bool HandleMessage(const IPC::Message& message);
+  void FormsSeen(mojo::Array<FormData> forms,
+                 base::TimeTicks timestamp) override;
+  void WillSubmitForm(const FormData& form, base::TimeTicks timestamp) override;
+  void FormSubmitted(const FormData& form) override;
+  void TextFieldDidChange(const FormData& form,
+                          const FormFieldData& field,
+                          base::TimeTicks timestamp) override;
+  void QueryFormFieldAutofill(int32_t id,
+                              const FormData& form,
+                              const FormFieldData& field,
+                              const gfx::RectF& bounding_box) override;
+  void HidePopup() override;
+  void PingAck() override;
+  void FocusNoLongerOnForm() override;
+  void DidFillAutofillFormData(const FormData& form,
+                               base::TimeTicks timestamp) override;
+  void DidPreviewAutofillFormData() override;
+  void DidEndTextFieldEditing() override;
+  void SetDataList(mojo::Array<mojo::String> values,
+                   mojo::Array<mojo::String> labels) override;
 
   // Called when the frame has navigated.
   void DidNavigateFrame(const content::LoadCommittedDetails& details,
                         const content::FrameNavigateParams& params);
 
   // Tells the render frame that a user gesture was observed
   // somewhere in the tab (including in a different frame).
   void NotifyFirstUserGestureObservedInTab();
 
   AutofillExternalDelegate* autofill_external_delegate() {
     return &autofill_external_delegate_;
   }
 
   AutofillManager* autofill_manager() { return autofill_manager_.get(); }
   content::RenderFrameHost* render_frame_host() { return render_frame_host_; }
 
+  const mojom::AutofillAgentPtr& GetAutofillAgent();
+
  protected:
   // Sets the manager to |manager| and sets |manager|'s external delegate
   // to |autofill_external_delegate_|. Takes ownership of |manager|.
   void SetAutofillManager(std::unique_ptr<AutofillManager> manager);
 
  private:
-  void ConnectToMojoAutofillAgentIfNeeded();
-
   // 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.
   std::unique_ptr<AutofillManager> autofill_manager_;
 
   // AutofillExternalDelegate instance that this object instantiates in the
   // case where the Autofill native UI is enabled.
   AutofillExternalDelegate autofill_external_delegate_;
 
-  mojo::BindingSet<mojom::AutofillDriver> bindings_;
+  mojo::Binding<mojom::AutofillDriver> binding_;
 
   mojom::AutofillAgentPtr mojo_autofill_agent_;
 };
 
 }  // namespace autofill
 
 #endif  // COMPONENTS_AUTOFILL_CONTENT_BROWSER_CONTENT_AUTOFILL_DRIVER_H_