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 ad4f5cb7fa1fb0b35d0d501de67d2445e6ed9ed8..cccc326cb4f44a66d4d910240225e34fb78a7f66 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/platform_util.h"
 #include "chrome/browser/prerender/prerender_final_status.h"
 #include "chrome/browser/prerender/prerender_manager.h"
@@ -2805,6 +2806,13 @@ void ChromeContentBrowserClient::RegisterRenderFrameMojoServices(
   registry->AddService(
       base::Bind(&CreateWebUsbChooserService, render_frame_host));
 #endif  // !defined(OS_ANDROID)
+
+  // 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(