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 7112694b7e567bc354b680fe3e56316c0e648018..13cda10e7fd42ecdd194a2e14e34fbcdbb56f42d 100644
--- a/third_party/WebKit/Source/web/LocalFrameClientImpl.cpp
+++ b/third_party/WebKit/Source/web/LocalFrameClientImpl.cpp
@@ -231,6 +231,15 @@ 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();
 }