Added interstitial page for merge session.

chrome/browser/browser_resources.grd

Index: chrome/browser/browser_resources.grd
diff --git a/chrome/browser/browser_resources.grd b/chrome/browser/browser_resources.grd
index b364ba3a71fa478ddc89b70ff036077aca9e4d11..5450283ba3c494ab54d4850fdf3edce9b4e10a08 100644
--- a/chrome/browser/browser_resources.grd
+++ b/chrome/browser/browser_resources.grd
@@ -283,6 +283,7 @@
         <include name="IDR_NOTIFICATION_ICON_LINK_HTML" file="resources\chromeos\notification_icon_link.html" type="BINDATA" />
         <include name="IDR_ECHO_MANIFEST" file="resources\chromeos\echo\manifest.json" type="BINDATA" />
         <include name="IDR_OFFLINE_LOAD_HTML" file="resources\chromeos\offline_load.html" flattenhtml="true" type="BINDATA" />
+        <include name="IDR_MERGE_SESSION_LOAD_HTML" file="resources\chromeos\merge_session_load.html" flattenhtml="true" type="BINDATA" />
         <include name="IDR_OS_CREDITS_HTML" file="resources\chromeos\about_os_credits.html" flattenhtml="true" type="BINDATA" />
         <include name="IDR_PROXY_SETTINGS_HTML" file="resources\chromeos\proxy_settings.html" flattenhtml="true" type="BINDATA" />
         <include name="IDR_BLUETOOTH_PAIR_DEVICE_HTML" file="resources\chromeos\bluetooth_pair_device.html" flattenhtml="true" type="BINDATA" />