Refactor Autofill for out of process iframes (OOPIF).

components/autofill/content/renderer/password_autofill_agent.h

Index: components/autofill/content/renderer/password_autofill_agent.h
diff --git a/components/autofill/content/renderer/password_autofill_agent.h b/components/autofill/content/renderer/password_autofill_agent.h
index 99f2a94567338cd656bc1e13727d9af50ae56f3a..d03808f642d9fc78f9ff3248522f68211c60a14a 100644
--- a/components/autofill/content/renderer/password_autofill_agent.h
+++ b/components/autofill/content/renderer/password_autofill_agent.h
@@ -8,9 +8,11 @@
 #include <map>
 #include <vector>
 
-#include "base/memory/linked_ptr.h"
+#include "base/gtest_prod_util.h"
+#include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "components/autofill/core/common/password_form_fill_data.h"
+#include "content/public/renderer/render_frame_observer.h"
 #include "content/public/renderer/render_view_observer.h"
 #include "third_party/WebKit/public/web/WebInputElement.h"
 
@@ -24,13 +26,12 @@ class WebView;
 namespace autofill {
 
 // This class is responsible for filling password forms.
-// There is one PasswordAutofillAgent per RenderView.
-class PasswordAutofillAgent : public content::RenderViewObserver {
+class PasswordAutofillAgent : public content::RenderFrameObserver {
  public:
-  explicit PasswordAutofillAgent(content::RenderView* render_view);
+  explicit PasswordAutofillAgent(content::RenderFrame* render_frame);
   ~PasswordAutofillAgent() override;
 
-  // WebViewClient editor related calls forwarded by the RenderView.
+  // WebFrameClient editor related calls forwarded by AutofillAgent.
   // If they return true, it indicates the event was consumed and should not
   // be used for any other autofill activity.
   bool TextFieldDidEndEditing(const blink::WebInputElement& element);
@@ -54,6 +55,7 @@ class PasswordAutofillAgent : public content::RenderViewObserver {
   // their previous filled state. Return false if no login information was
   // found for the form.
   bool DidClearAutofillSelection(const blink::WebNode& node);
+
   // Shows an Autofill popup with username suggestions for |element|. If
   // |show_all| is |true|, will show all possible suggestions for that element,
   // otherwise shows suggestions based on current value of |element|.
@@ -61,7 +63,7 @@ class PasswordAutofillAgent : public content::RenderViewObserver {
   bool ShowSuggestions(const blink::WebInputElement& element, bool show_all);
 
   // Called when new form controls are inserted.
-  void OnDynamicFormsSeen(blink::WebFrame* frame);
+  void OnDynamicFormsSeen();
 
   // Called when the user first interacts with the page after a load. This is a
   // signal to make autofilled values of password input elements accessible to
@@ -100,8 +102,6 @@ class PasswordAutofillAgent : public content::RenderViewObserver {
   typedef std::map<blink::WebElement, PasswordInfo> LoginToPasswordInfoMap;
   typedef std::map<blink::WebElement, int> LoginToPasswordInfoKeyMap;
   typedef std::map<blink::WebElement, blink::WebElement> PasswordToLoginMap;
-  typedef std::map<blink::WebFrame*,
-                   linked_ptr<PasswordForm> > FrameToPasswordFormMap;
 
   // This class keeps track of autofilled password input elements and makes sure
   // the autofilled password value is not accessible to JavaScript code until
@@ -132,19 +132,57 @@ class PasswordAutofillAgent : public content::RenderViewObserver {
     DISALLOW_COPY_AND_ASSIGN(PasswordValueGatekeeper);
   };
 
-  // RenderViewObserver:
+  // Thunk class for RenderViewObserver methods that haven't yet been migrated
+  // to RenderFrameObserver. Should eventually be removed.
+  // http://crbug.com/433486
+  class LegacyPasswordAutofillAgent : public content::RenderViewObserver {
+   public:
+    LegacyPasswordAutofillAgent(content::RenderView* render_view,
+                                PasswordAutofillAgent* agent);
+    ~LegacyPasswordAutofillAgent() override;
+
+    // RenderViewObserver:
+    void OnDestruct() override;
+    void DidStartLoading() override;
+    void DidStopLoading() override;
+    void DidStartProvisionalLoad(blink::WebLocalFrame* frame) override;
+    void FrameDetached(blink::WebFrame* frame) override;
+    void WillSendSubmitEvent(blink::WebLocalFrame* frame,
+                             const blink::WebFormElement& form) override;
+    void WillSubmitForm(blink::WebLocalFrame* frame,
+                        const blink::WebFormElement& form) override;
+
+   private:
+    PasswordAutofillAgent* agent_;
+
+    DISALLOW_COPY_AND_ASSIGN(LegacyPasswordAutofillAgent);
+  };
+  friend class LegacyPasswordAutofillAgent;
+  FRIEND_TEST_ALL_PREFIXES(
+      PasswordAutofillAgentTest,
+      RememberLastNonEmptyUsernameAndPasswordOnSubmit_ScriptCleared);
+  FRIEND_TEST_ALL_PREFIXES(
+      PasswordAutofillAgentTest,
+      RememberLastNonEmptyUsernameAndPasswordOnSubmit_UserCleared);
+  FRIEND_TEST_ALL_PREFIXES(
+      PasswordAutofillAgentTest,
+      RememberLastNonEmptyUsernameAndPasswordOnSubmit_New);
+
+  // RenderFrameObserver:
   bool OnMessageReceived(const IPC::Message& message) override;
-  void DidStartProvisionalLoad(blink::WebLocalFrame* frame) override;
-  void DidStartLoading() override;
-  void DidFinishDocumentLoad(blink::WebLocalFrame* frame) override;
-  void DidFinishLoad(blink::WebLocalFrame* frame) override;
-  void DidStopLoading() override;
-  void FrameDetached(blink::WebFrame* frame) override;
-  void FrameWillClose(blink::WebFrame* frame) override;
+  void DidFinishDocumentLoad() override;
+  void DidFinishLoad() override;
+  void FrameWillClose() override;
+
+  // Legacy RenderViewObserver:
+  void DidStartLoading();
+  void DidStopLoading();
+  void LegacyDidStartProvisionalLoad(blink::WebLocalFrame* frame);
+  void FrameDetached(blink::WebFrame* frame);
   void WillSendSubmitEvent(blink::WebLocalFrame* frame,
-                           const blink::WebFormElement& form) override;
+                           const blink::WebFormElement& form);
   void WillSubmitForm(blink::WebLocalFrame* frame,
-                      const blink::WebFormElement& form) override;
+                      const blink::WebFormElement& form);
 
   // RenderView IPC handlers:
   void OnFillPasswordForm(int key, const PasswordFormFillData& form_data);
@@ -152,7 +190,7 @@ class PasswordAutofillAgent : public content::RenderViewObserver {
 
   // Scans the given frame for password forms and sends them up to the browser.
   // If |only_visible| is true, only forms visible in the layout are sent.
-  void SendPasswordForms(blink::WebFrame* frame, bool only_visible);
+  void SendPasswordForms(bool only_visible);
 
   bool ShowSuggestionPopup(const PasswordFormFillData& fill_data,
                            const blink::WebInputElement& user_input,
@@ -165,9 +203,8 @@ class PasswordAutofillAgent : public content::RenderViewObserver {
       const blink::WebInputElement& password,
       const PasswordFormFillData& fill_data);
 
-  // Invoked when the passed frame is closing.  Gives us a chance to clear any
-  // reference we may have to elements in that frame.
-  void FrameClosing(const blink::WebFrame* frame);
+  // Invoked when the frame is closing.
+  void FrameClosing();
 
   // Finds login information for a |node| that was previously filled.
   bool FindLoginInfo(const blink::WebNode& node,
@@ -179,17 +216,14 @@ class PasswordAutofillAgent : public content::RenderViewObserver {
   void ClearPreview(blink::WebInputElement* username,
                     blink::WebInputElement* password);
 
-  // If |provisionally_saved_forms_| contains a form for |current_frame| or its
-  // children, return such frame.
-  blink::WebFrame* CurrentOrChildFrameWithSavedForms(
-      const blink::WebFrame* current_frame);
-
   // Extracts a PasswordForm from |form| and saves it as
-  // |provisionally_saved_forms_[frame]|, as long as it satisfies |restriction|.
-  void ProvisionallySavePassword(blink::WebLocalFrame* frame,
-                                 const blink::WebFormElement& form,
+  // |provisionally_saved_form_|, as long as it satisfies |restriction|.
+  void ProvisionallySavePassword(const blink::WebFormElement& form,
                                  ProvisionallySaveRestriction restriction);
 
+  // Passes through |RenderViewObserver| method to |this|.
+  LegacyPasswordAutofillAgent legacy_;
+
   // The logins we have filled so far with their associated info.
   LoginToPasswordInfoMap login_to_password_info_;
   // And the keys under which PasswordAutofillManager can find the same info.
@@ -205,7 +239,7 @@ class PasswordAutofillAgent : public content::RenderViewObserver {
 
   // Set if the user might be submitting a password form on the current page,
   // but the submit may still fail (i.e. doesn't pass JavaScript validation).
-  FrameToPasswordFormMap provisionally_saved_forms_;
+  scoped_ptr<PasswordForm> provisionally_saved_form_;
 
   PasswordValueGatekeeper gatekeeper_;