PlzNavigate: Make ServiceWorker work with PlzNavigate.

content/browser/frame_host/navigation_handle_impl.h

Index: content/browser/frame_host/navigation_handle_impl.h
diff --git a/content/browser/frame_host/navigation_handle_impl.h b/content/browser/frame_host/navigation_handle_impl.h
index 59a5f65ecc517a5457ab1621684a2db3f40230b4..6f46707108e531ceac132639638d387611e5710f 100644
--- a/content/browser/frame_host/navigation_handle_impl.h
+++ b/content/browser/frame_host/navigation_handle_impl.h
@@ -19,6 +19,7 @@
 namespace content {
 
 class NavigatorDelegate;
+class ServiceWorkerNavigationHandle;
 struct NavigationRequestInfo;
 
 // This class keeps track of a single navigation. It is created upon receipt of
@@ -104,6 +105,11 @@ class CONTENT_EXPORT NavigationHandleImpl : public NavigationHandle {
     is_transferring_ = is_transferring;
   }
 
+  // PlzNavigate
+  ServiceWorkerNavigationHandle* service_worker_handle() const {
+    return service_worker_handle_.get();
+  }
+
   typedef base::Callback<void(NavigationThrottle::ThrottleCheckResult)>
       ThrottleChecksFinishedCallback;
 
@@ -194,6 +200,11 @@ class CONTENT_EXPORT NavigationHandleImpl : public NavigationHandle {
   // This callback will be run when all throttle checks have been performed.
   ThrottleChecksFinishedCallback complete_callback_;
 
+  // PlzNavigate
+  // Manages the lifetime of a pre-created ServiceWorkerProviderHost until a
+  // corresponding ServiceWorkerNetworkProvider is created in the renderer.
+  scoped_ptr<ServiceWorkerNavigationHandle> service_worker_handle_;
+
   DISALLOW_COPY_AND_ASSIGN(NavigationHandleImpl);
 };