Identify service worker version at main resource load time.

content/child/request_extra_data.cc

Index: content/child/request_extra_data.cc
diff --git a/content/child/request_extra_data.cc b/content/child/request_extra_data.cc
index ba9789d6f49583beed257904b7a43006f662963c..64000aae3a57587014ace5729c38cafe43852faf 100644
--- a/content/child/request_extra_data.cc
+++ b/content/child/request_extra_data.cc
@@ -3,11 +3,45 @@
 // found in the LICENSE file.
 
 #include "content/child/request_extra_data.h"
+#include "content/common/service_worker/service_worker_types.h"
+#include "ipc/ipc_message.h"
 
 using blink::WebString;
 
 namespace content {
 
+RequestExtraData::RequestExtraData()
+    : webkit_glue::WebURLRequestExtraDataImpl(blink::WebString(),
+                                              false),
+      visibility_state_(blink::WebPageVisibilityStateVisible),
+      render_frame_id_(MSG_ROUTING_NONE),
+      is_main_frame_(false),
+      parent_is_main_frame_(false),
+      parent_render_frame_id_(-1),
+      allow_download_(true),
+      transition_type_(PAGE_TRANSITION_LINK),
+      should_replace_current_entry_(false),
+      transferred_request_child_id_(-1),
+      transferred_request_request_id_(-1),
+      service_worker_provider_id_(kInvalidServiceWorkerProviderId) {
+}
+
+RequestExtraData::RequestExtraData(int provider_id)
+    : webkit_glue::WebURLRequestExtraDataImpl(blink::WebString(),
+                                              false),
+      visibility_state_(blink::WebPageVisibilityStateVisible),
+      render_frame_id_(MSG_ROUTING_NONE),
+      is_main_frame_(false),
+      parent_is_main_frame_(false),
+      parent_render_frame_id_(-1),
+      allow_download_(true),
+      transition_type_(PAGE_TRANSITION_LINK),
+      should_replace_current_entry_(false),
+      transferred_request_child_id_(-1),
+      transferred_request_request_id_(-1),
+      service_worker_provider_id_(provider_id) {
+}
+
 RequestExtraData::RequestExtraData(
     blink::WebPageVisibilityState visibility_state,
     const WebString& custom_user_agent,