PlzNavigate: Make ServiceWorker work with PlzNavigate.

content/browser/service_worker/service_worker_provider_host.h

Index: content/browser/service_worker/service_worker_provider_host.h
diff --git a/content/browser/service_worker/service_worker_provider_host.h b/content/browser/service_worker/service_worker_provider_host.h
index 70ed349520841fb5d473d6f62c6b785a7d7ef8b6..8630290d6fedc47f0950e5635b7bad1d04e9297e 100644
--- a/content/browser/service_worker/service_worker_provider_host.h
+++ b/content/browser/service_worker/service_worker_provider_host.h
@@ -52,6 +52,15 @@ class CONTENT_EXPORT ServiceWorkerProviderHost
   using GetRegistrationForReadyCallback =
       base::Callback<void(ServiceWorkerRegistration* reigstration)>;
 
+  // PlzNavigate
+  // This value is used for the render_process_id for browser-initiated
+  // navigations.
+  static int kVirtualProcessIDForBrowserRequest;
+
+  // PlzNavigate
+  // Returns the next SWProvider ID for navigations.
+  static int GetNextNavigationProviderId();
+
   // When this provider host is for a Service Worker context, |route_id| is
   // MSG_ROUTING_NONE. When this provider host is for a Document,
   // |route_id| is the frame ID of the Document. When this provider host is for
@@ -202,6 +211,13 @@ class CONTENT_EXPORT ServiceWorkerProviderHost
     return dispatcher_host_;
   }
 
+  // PlzNavigate
+  // Completes initialization of provider hosts used for navigation requests.
+  void CompleteNavigationInitialized(
+      int process_id,
+      int route_id,
+      ServiceWorkerDispatcherHost* dispatcher_host);
+
   // Sends event messages to the renderer. Events for the worker are queued up
   // until the worker thread id is known via SetReadyToSendMessagesToWorker().
   void SendUpdateFoundMessage(
@@ -253,6 +269,10 @@ class CONTENT_EXPORT ServiceWorkerProviderHost
   FRIEND_TEST_ALL_PREFIXES(ServiceWorkerContextRequestHandlerTest,
                            UpdateForceBypassCache);
 
+  // PlzNavigate
+  // Next SWProvider ID for navigations, starting at -2 and going down.
+  static int next_navigation_provider_id_;
+
   struct OneShotGetReadyCallback {
     GetRegistrationForReadyCallback callback;
     bool called;