Replicating WebFrame::uniqueName across renderers.

components/printing/renderer/print_web_view_helper.cc

Index: components/printing/renderer/print_web_view_helper.cc
diff --git a/components/printing/renderer/print_web_view_helper.cc b/components/printing/renderer/print_web_view_helper.cc
index f2556cccd75d515cbc0941c98822dcee54dea28c..c50621c722d6d49c1ba7ffec68a5ddf4a30f9144 100644
--- a/components/printing/renderer/print_web_view_helper.cc
+++ b/components/printing/renderer/print_web_view_helper.cc
@@ -616,6 +616,7 @@ class PrepareFrameAndViewForPrint : public blink::WebViewClient,
       blink::WebLocalFrame* parent,
       blink::WebTreeScopeType scope,
       const blink::WebString& name,
+      const blink::WebString& uniqueName,
       blink::WebSandboxFlags sandboxFlags,
       const blink::WebFrameOwnerProperties& frameOwnerProperties) override;
   void frameDetached(blink::WebFrame* frame, DetachType type) override;
@@ -760,7 +761,8 @@ void PrepareFrameAndViewForPrint::didStopLoading() {
 blink::WebFrame* PrepareFrameAndViewForPrint::createChildFrame(
     blink::WebLocalFrame* parent,
     blink::WebTreeScopeType scope,
-    const blink::WebString& name,
+    const blink::WebString&  name,
+    const blink::WebString& uniqueName,
     blink::WebSandboxFlags sandboxFlags,
     const blink::WebFrameOwnerProperties& frameOwnerProperties) {
   blink::WebFrame* frame = blink::WebLocalFrame::create(scope, this);