Block renderer-initiated main frame navigations to data URLs

third_party/WebKit/Source/web/LocalFrameClientImpl.cpp

Index: third_party/WebKit/Source/web/LocalFrameClientImpl.cpp
diff --git a/third_party/WebKit/Source/web/LocalFrameClientImpl.cpp b/third_party/WebKit/Source/web/LocalFrameClientImpl.cpp
index 9aac7c698a8a42d49df7764dc46fe142a118bd15..a6c7b3cd0bef50e0b0e9e70e057f2e5e83041ec0 100644
--- a/third_party/WebKit/Source/web/LocalFrameClientImpl.cpp
+++ b/third_party/WebKit/Source/web/LocalFrameClientImpl.cpp
@@ -224,6 +224,15 @@ void LocalFrameClientImpl::didUpdateCurrentHistoryItem() {
     m_webFrame->client()->didUpdateCurrentHistoryItem();
 }
 
+bool LocalFrameClientImpl::allowContentInitiatedDataUrlNavigations(
+    const KURL& url) {
+  if (RuntimeEnabledFeatures::allowContentInitiatedDataUrlNavigationsEnabled())
+    return true;
+  if (m_webFrame->client())
+    return m_webFrame->client()->allowContentInitiatedDataUrlNavigations(url);
+  return false;
+}
+
 bool LocalFrameClientImpl::hasWebView() const {
   return m_webFrame->viewImpl();
 }