Fixing iframe jank in the local omnibox popup.

chrome/browser/search/local_ntp_source.cc

Index: chrome/browser/search/local_ntp_source.cc
diff --git a/chrome/browser/search/local_ntp_source.cc b/chrome/browser/search/local_ntp_source.cc
index a636df109f371a2d1a448db22a54d6a82dadcf94..42a91740bccf0b0d14aa307f91593595a10f4af6 100644
--- a/chrome/browser/search/local_ntp_source.cc
+++ b/chrome/browser/search/local_ntp_source.cc
@@ -7,6 +7,7 @@
 #include "base/logging.h"
 #include "base/memory/ref_counted_memory.h"
 #include "base/string_util.h"
+#include "base/stringprintf.h"
 #include "chrome/common/url_constants.h"
 #include "googleurl/src/gurl.h"
 #include "grit/browser_resources.h"
@@ -103,3 +104,10 @@ bool LocalNtpSource::ShouldServiceRequest(
   }
   return false;
 }
+
+std::string LocalNtpSource::GetContentSecurityPolicyFrameSrc() const {
+  // Allow embedding of chrome search suggestion host.
+  return base::StringPrintf("frame-src %s://%s/;",
+                            chrome::kChromeSearchScheme,
+                            chrome::kChromeSearchSuggestionHost);
+}