Initializes SecurityPolicy static locals during blink initialization

Source/platform/weborigin/SecurityPolicy.h

Index: Source/platform/weborigin/SecurityPolicy.h
diff --git a/Source/platform/weborigin/SecurityPolicy.h b/Source/platform/weborigin/SecurityPolicy.h
index 53e3bc1049398f825b4830c6e03b1d9ef26b0fef..78eda16bae04b9da52687b3c0c2792e85e4fc34e 100644
--- a/Source/platform/weborigin/SecurityPolicy.h
+++ b/Source/platform/weborigin/SecurityPolicy.h
@@ -41,6 +41,10 @@ class SecurityOrigin;
 
 class PLATFORM_EXPORT SecurityPolicy {
 public:
+    // This must be called during initialization (before we create
+    // other threads).
+    static void init();
+
     // True if the referrer should be omitted according to the
     // ReferrerPolicyNoReferrerWhenDowngrade. If you intend to send a
     // referrer header, you should use generateReferrer instead.