Switch components/password_manager code from IPC messages to Mojo.

chrome/browser/chrome_content_browser_client.cc

Index: chrome/browser/chrome_content_browser_client.cc
diff --git a/chrome/browser/chrome_content_browser_client.cc b/chrome/browser/chrome_content_browser_client.cc
index 31c8f70af1f6a8d203d2ef405b1615fb23ff6ace..ceb84ac2d3b875dd5b05f9b0a797f2f0a51e9d63 100644
--- a/chrome/browser/chrome_content_browser_client.cc
+++ b/chrome/browser/chrome_content_browser_client.cc
@@ -53,6 +53,7 @@
 #include "chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_settings.h"
 #include "chrome/browser/net/spdyproxy/data_reduction_proxy_chrome_settings_factory.h"
 #include "chrome/browser/notifications/platform_notification_service_impl.h"
+#include "chrome/browser/password_manager/chrome_password_manager_client.h"
 #include "chrome/browser/permissions/permission_context_base.h"
 #include "chrome/browser/platform_util.h"
 #include "chrome/browser/prerender/prerender_final_status.h"
@@ -2802,6 +2803,13 @@ void ChromeContentBrowserClient::RegisterRenderFrameMojoServices(
     registry->AddService(
         base::Bind(&CreateWebUsbChooserService, render_frame_host));
   }
+
+  // Register mojo CredentialManager service only for main frame.
+  if (!render_frame_host->GetParent()) {
+    registry->AddService(
+        base::Bind(&ChromePasswordManagerClient::BindCredentialManager,
+                   render_frame_host));
+  }
 }
 
 void ChromeContentBrowserClient::RegisterInProcessMojoApplications(