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

components/password_manager/content/browser/content_password_manager_driver_factory.cc

Index: components/password_manager/content/browser/content_password_manager_driver_factory.cc
diff --git a/components/password_manager/content/browser/content_password_manager_driver_factory.cc b/components/password_manager/content/browser/content_password_manager_driver_factory.cc
index 922d325f7294135dd9f1fabac94e30e4ae220716..ad8d203fc7c4a20beef60871a9b264ecccf1f240 100644
--- a/components/password_manager/content/browser/content_password_manager_driver_factory.cc
+++ b/components/password_manager/content/browser/content_password_manager_driver_factory.cc
@@ -11,6 +11,7 @@
 #include "base/stl_util.h"
 #include "components/autofill/content/browser/content_autofill_driver.h"
 #include "components/autofill/content/browser/content_autofill_driver_factory.h"
+#include "components/autofill/content/common/autofill_messages.h"
 #include "components/autofill/core/common/form_data.h"
 #include "components/autofill/core/common/password_form.h"
 #include "components/password_manager/content/browser/content_password_manager_driver.h"
@@ -22,6 +23,7 @@
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/ssl_status.h"
+#include "ipc/ipc_message_macros.h"
 #include "net/cert/cert_status_flags.h"
 
 namespace password_manager {
@@ -73,30 +75,6 @@
           kContentPasswordManagerDriverFactoryWebContentsUserDataKey));
 }
 
-// static
-void ContentPasswordManagerDriverFactory::BindPasswordManagerDriver(
-    content::RenderFrameHost* render_frame_host,
-    autofill::mojom::PasswordManagerDriverRequest request) {
-  content::WebContents* web_contents =
-      content::WebContents::FromRenderFrameHost(render_frame_host);
-  if (!web_contents)
-    return;
-
-  ContentPasswordManagerDriverFactory* factory =
-      ContentPasswordManagerDriverFactory::FromWebContents(web_contents);
-  // We try to bind to the driver, but if driver is not ready for now or totally
-  // not available for this render frame host, the request will be just dropped.
-  // This would cause the message pipe to be closed, which will raise a
-  // connection error on the peer side.
-  if (!factory)
-    return;
-
-  ContentPasswordManagerDriver* driver =
-      factory->GetDriverForFrame(render_frame_host);
-  if (driver)
-    driver->BindRequest(std::move(request));
-}
-
 ContentPasswordManagerDriver*
 ContentPasswordManagerDriverFactory::GetDriverForFrame(
     content::RenderFrameHost* render_frame_host) {
@@ -121,12 +99,25 @@
   frame_driver_map_.erase(render_frame_host);
 }
 
+bool ContentPasswordManagerDriverFactory::OnMessageReceived(
+    const IPC::Message& message,
+    content::RenderFrameHost* render_frame_host) {
+  return frame_driver_map_.find(render_frame_host)
+      ->second->HandleMessage(message);
+}
+
 void ContentPasswordManagerDriverFactory::DidNavigateAnyFrame(
     content::RenderFrameHost* render_frame_host,
     const content::LoadCommittedDetails& details,
     const content::FrameNavigateParams& params) {
   frame_driver_map_.find(render_frame_host)
       ->second->DidNavigateFrame(details, params);
+}
+
+void ContentPasswordManagerDriverFactory::TestingSetDriverForFrame(
+    content::RenderFrameHost* render_frame_host,
+    std::unique_ptr<ContentPasswordManagerDriver> driver) {
+  frame_driver_map_[render_frame_host] = std::move(driver);
 }
 
 void ContentPasswordManagerDriverFactory::RequestSendLoggingAvailability() {