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 dae4eb51a73c00cc43ede696a2bc357ec13dabab..aff46219e83756166a184b53548f0d81c1cc3e2c 100644
--- a/third_party/WebKit/Source/web/LocalFrameClientImpl.cpp
+++ b/third_party/WebKit/Source/web/LocalFrameClientImpl.cpp
@@ -230,6 +230,15 @@ void LocalFrameClientImpl::DidUpdateCurrentHistoryItem() {
     web_frame_->Client()->DidUpdateCurrentHistoryItem();
 }
 
+bool LocalFrameClientImpl::AllowContentInitiatedDataUrlNavigations(
+    const KURL& url) {
+  if (RuntimeEnabledFeatures::allowContentInitiatedDataUrlNavigationsEnabled())
+    return true;
+  if (web_frame_->Client())
+    return web_frame_->Client()->AllowContentInitiatedDataUrlNavigations(url);
+  return false;
+}
+
 bool LocalFrameClientImpl::HasWebView() const {
   return web_frame_->ViewImpl();
 }