Revert of [Autofill] Migrate ContentPasswordManagerDriver<-->Password{Autofill,Generation}Agent IPCs to mojo.

components/autofill/content/renderer/password_generation_agent.h

Index: components/autofill/content/renderer/password_generation_agent.h
diff --git a/components/autofill/content/renderer/password_generation_agent.h b/components/autofill/content/renderer/password_generation_agent.h
index df2b9a7a7e757afbf3579a9dd089b5dc0c960d49..47f3a912e3e6da05d171765c93e1f8cd697a7d8a 100644
--- a/components/autofill/content/renderer/password_generation_agent.h
+++ b/components/autofill/content/renderer/password_generation_agent.h
@@ -14,10 +14,7 @@
 
 #include "base/macros.h"
 #include "base/memory/linked_ptr.h"
-#include "components/autofill/content/public/interfaces/autofill_agent.mojom.h"
-#include "components/autofill/content/public/interfaces/autofill_driver.mojom.h"
 #include "content/public/renderer/render_frame_observer.h"
-#include "mojo/public/cpp/bindings/binding.h"
 #include "third_party/WebKit/public/web/WebInputElement.h"
 #include "url/gurl.h"
 
@@ -35,25 +32,11 @@
 // This class is responsible for controlling communication for password
 // generation between the browser (which shows the popup and generates
 // passwords) and WebKit (shows the generation icon in the password field).
-class PasswordGenerationAgent : public content::RenderFrameObserver,
-                                public mojom::PasswordGenerationAgent {
+class PasswordGenerationAgent : public content::RenderFrameObserver {
  public:
   PasswordGenerationAgent(content::RenderFrame* render_frame,
                           PasswordAutofillAgent* password_agent);
   ~PasswordGenerationAgent() override;
-
-  void BindRequest(mojom::PasswordGenerationAgentRequest request);
-
-  // mojom::PasswordGenerationAgent:
-  void FormNotBlacklisted(const PasswordForm& form) override;
-  void GeneratedPasswordAccepted(const base::string16& password) override;
-  void FoundFormsEligibleForGeneration(
-      const std::vector<PasswordFormGenerationData>& forms) override;
-  // Sets |generation_element_| to the focused password field and shows a
-  // generation popup at this field.
-  void UserTriggeredGeneratePassword() override;
-  // Enables the form classifier.
-  void AllowToRunFormClassifier() override;
 
   // Returns true if the field being changed is one where a generated password
   // is being offered. Updates the state of the popup if necessary.
@@ -91,11 +74,16 @@
   typedef std::vector<AccountCreationFormData> AccountCreationFormDataList;
 
   // RenderFrameObserver:
+  bool OnMessageReceived(const IPC::Message& message) override;
   void DidFinishDocumentLoad() override;
   void DidFinishLoad() override;
   void OnDestruct() override;
 
-  const mojom::PasswordManagerDriverPtr& GetPasswordManagerDriver();
+  // Message handlers.
+  void OnFormNotBlacklisted(const PasswordForm& form);
+  void OnPasswordAccepted(const base::string16& password);
+  void OnFormsEligibleForGenerationFound(
+      const std::vector<autofill::PasswordFormGenerationData>& forms);
 
   // Helper function that will try and populate |password_elements_| and
   // |possible_account_creation_form_|.
@@ -114,6 +102,13 @@
 
   // Hides a password generation popup if one exists.
   void HidePopup();
+
+  // Sets |generation_element_| to the focused password field and shows a
+  // generation popup at this field.
+  void OnUserTriggeredGeneratePassword();
+
+  // Enables the form classifier.
+  void OnAllowToRunFormClassifier();
 
   // Runs HTML parsing based classifier and saves its outcome to proto.
   // TODO(crbug.com/621442): Remove client-side form classifier when server-side
@@ -182,8 +177,6 @@
   // in password fields are updated.
   PasswordAutofillAgent* password_agent_;
 
-  mojo::Binding<mojom::PasswordGenerationAgent> binding_;
-
   DISALLOW_COPY_AND_ASSIGN(PasswordGenerationAgent);
 };