Pull 'worker-src' back behind the experimental flag.

third_party/WebKit/Source/core/frame/csp/CSPDirectiveList.cpp

Index: third_party/WebKit/Source/core/frame/csp/CSPDirectiveList.cpp
diff --git a/third_party/WebKit/Source/core/frame/csp/CSPDirectiveList.cpp b/third_party/WebKit/Source/core/frame/csp/CSPDirectiveList.cpp
index 4bdfefc6cc7a7147cdca93bbf6659dc25093bb0f..899562df2db1ebcd3554b25ea72c55a4c6f26d97 100644
--- a/third_party/WebKit/Source/core/frame/csp/CSPDirectiveList.cpp
+++ b/third_party/WebKit/Source/core/frame/csp/CSPDirectiveList.cpp
@@ -1117,7 +1117,8 @@ void CSPDirectiveList::addDirective(const String& name, const String& value) {
     setCSPDirective<SourceListDirective>(name, value, m_baseURI);
   } else if (equalIgnoringCase(name, ContentSecurityPolicy::ChildSrc)) {
     setCSPDirective<SourceListDirective>(name, value, m_childSrc);
-  } else if (equalIgnoringCase(name, ContentSecurityPolicy::WorkerSrc)) {
+  } else if (equalIgnoringCase(name, ContentSecurityPolicy::WorkerSrc) &&
+             m_policy->experimentalFeaturesEnabled()) {
     setCSPDirective<SourceListDirective>(name, value, m_workerSrc);
   } else if (equalIgnoringCase(name, ContentSecurityPolicy::FormAction)) {
     setCSPDirective<SourceListDirective>(name, value, m_formAction);