[Password Generation] Enable generation for dynamically created forms.

android_webview/renderer/aw_content_renderer_client.cc

Index: android_webview/renderer/aw_content_renderer_client.cc
diff --git a/android_webview/renderer/aw_content_renderer_client.cc b/android_webview/renderer/aw_content_renderer_client.cc
index 7ba28d9044d9c74f09ff1eedd27ddb8aeda27178..fa1b3633d843dc7713f3dd1cefed9c1e9e6c45bc 100644
--- a/android_webview/renderer/aw_content_renderer_client.cc
+++ b/android_webview/renderer/aw_content_renderer_client.cc
@@ -17,6 +17,7 @@
 #include "base/strings/utf_string_conversions.h"
 #include "components/autofill/content/renderer/autofill_agent.h"
 #include "components/autofill/content/renderer/password_autofill_agent.h"
+#include "components/autofill/content/renderer/password_generation_agent.h"
 #include "components/visitedlink/renderer/visitedlink_slave.h"
 #include "content/public/common/url_constants.h"
 #include "content/public/renderer/document_state.h"
@@ -144,7 +145,10 @@ void AwContentRendererClient::RenderViewCreated(
   // autofill agent to store a weakptr).
   autofill::PasswordAutofillAgent* password_autofill_agent =
       new autofill::PasswordAutofillAgent(render_view);
-  new autofill::AutofillAgent(render_view, password_autofill_agent, NULL);
+  autofill::PasswordGenerationAgent* password_generation_agent =
+      new autofill::PasswordGenerationAgent(render_view);
+  new autofill::AutofillAgent(
+      render_view, password_autofill_agent, password_generation_agent);
 }
 
 bool AwContentRendererClient::HasErrorPage(int http_status_code,