Delay loading the NTP after sign in until MergeSession has been performed in

chrome/browser/extensions/api/webstore_private/webstore_private_api.cc

Index: chrome/browser/extensions/api/webstore_private/webstore_private_api.cc
diff --git a/chrome/browser/extensions/api/webstore_private/webstore_private_api.cc b/chrome/browser/extensions/api/webstore_private/webstore_private_api.cc
index 72a6056990bffcb3c466d42d0a41bc07c8c507cc..eccb3f480430cfb3d823524621ce8a8b8181d9f8 100644
--- a/chrome/browser/extensions/api/webstore_private/webstore_private_api.cc
+++ b/chrome/browser/extensions/api/webstore_private/webstore_private_api.cc
@@ -449,6 +449,13 @@ void WebstorePrivateBeginInstallWithManifest3Function::SigninSuccess() {
   SigninCompletedOrNotNeeded();
 }
 
+void WebstorePrivateBeginInstallWithManifest3Function::MergeSessionComplete(
+    const GoogleServiceAuthError& error) {
+  // TODO(rogerta): once the embeded inline flow is enabled, the code in
+  // WebstorePrivateBeginInstallWithManifest3Function::SigninSuccess()
+  // should move to here.
+}
+
 void WebstorePrivateBeginInstallWithManifest3Function::
     SigninCompletedOrNotNeeded() {
   content::WebContents* web_contents = GetAssociatedWebContents();
@@ -578,7 +585,7 @@ void WebstorePrivateCompleteInstallFunction::OnExtensionInstallSuccess(
   if (test_webstore_installer_delegate)
     test_webstore_installer_delegate->OnExtensionInstallSuccess(id);
 
-  LOG(INFO) << "Install success, sending response";
+  VLOG(1) << "Install success, sending response";
   g_pending_installs.Get().EraseInstall(GetProfile(), id);
   SendResponse(true);
 
@@ -598,7 +605,7 @@ void WebstorePrivateCompleteInstallFunction::OnExtensionInstallFailure(
   }
 
   error_ = error;
-  LOG(INFO) << "Install failed, sending response";
+  VLOG(1) << "Install failed, sending response";
   g_pending_installs.Get().EraseInstall(GetProfile(), id);
   SendResponse(false);