Implement renderer process side handler of WorkerProcessMsg_CreateWorker message.

content/renderer/render_thread_impl.h

Index: content/renderer/render_thread_impl.h
diff --git a/content/renderer/render_thread_impl.h b/content/renderer/render_thread_impl.h
index ca22017994b23c9c5f9beb3492a4ab0f40b6403d..60bd13f96a35d2afeeb95a1045d5cee64725db1f 100644
--- a/content/renderer/render_thread_impl.h
+++ b/content/renderer/render_thread_impl.h
@@ -30,6 +30,7 @@
 class GrContext;
 class SkBitmap;
 struct ViewMsg_New_Params;
+struct WorkerProcessMsg_CreateWorker_Params;
 
 namespace blink {
 class WebGamepads;
@@ -397,6 +398,8 @@ class CONTENT_EXPORT RenderThreadImpl : public RenderThread,
                               blink::ScrollerStyle preferred_scroller_style,
                               bool redraw);
 #endif
+  void OnCreateNewSharedWorker(
+      const WorkerProcessMsg_CreateWorker_Params& params);
 
   void IdleHandlerInForegroundTab();