DevTools: add initial support for shared workers debugging

content/browser/worker_host/worker_process_host.cc

Index: content/browser/worker_host/worker_process_host.cc
diff --git a/content/browser/worker_host/worker_process_host.cc b/content/browser/worker_host/worker_process_host.cc
index 8dc2e1ab3aeed55b1839da1d7500c58154e4e7b9..59fdcee875c8eba02e6238ae84a902086ed4f4b7 100644
--- a/content/browser/worker_host/worker_process_host.cc
+++ b/content/browser/worker_host/worker_process_host.cc
@@ -16,6 +16,7 @@
 #include "content/browser/browser_thread.h"
 #include "content/browser/child_process_security_policy.h"
 #include "content/browser/content_browser_client.h"
+#include "content/browser/debugger/worker_devtools_message_filter.h"
 #include "content/browser/file_system/file_system_dispatcher_host.h"
 #include "content/browser/mime_registry_message_filter.h"
 #include "content/browser/renderer_host/blob_message_filter.h"
@@ -255,6 +256,7 @@ void WorkerProcessHost::CreateMessageFilters(int render_process_id) {
       new SocketStreamDispatcherHost(
           new URLRequestContextSelector(request_context), resource_context_);
   AddFilter(socket_stream_dispatcher_host);
+  AddFilter(new WorkerDevToolsMessageFilter(id()));
 }
 
 void WorkerProcessHost::CreateWorker(const WorkerInstance& instance) {