PlzNavigate: Make ServiceWorker work with PlzNavigate.

content/browser/service_worker/service_worker_request_handler.cc

Index: content/browser/service_worker/service_worker_request_handler.cc
diff --git a/content/browser/service_worker/service_worker_request_handler.cc b/content/browser/service_worker/service_worker_request_handler.cc
index da735b64d764019e65a045a9767a9155e93ee1f0..5313642584c9a220e395d828ce31f555803467da 100644
--- a/content/browser/service_worker/service_worker_request_handler.cc
+++ b/content/browser/service_worker/service_worker_request_handler.cc
@@ -6,6 +6,8 @@
 
 #include <string>
 
+#include "base/command_line.h"
+#include "content/browser/loader/navigation_url_loader_impl_core.h"
 #include "content/browser/service_worker/service_worker_context_core.h"
 #include "content/browser/service_worker/service_worker_context_wrapper.h"
 #include "content/browser/service_worker/service_worker_provider_host.h"
@@ -15,6 +17,7 @@
 #include "content/common/service_worker/service_worker_types.h"
 #include "content/common/service_worker/service_worker_utils.h"
 #include "content/public/browser/resource_context.h"
+#include "content/public/common/content_switches.h"
 #include "content/public/common/origin_util.h"
 #include "net/base/net_util.h"
 #include "net/url_request/url_request.h"
@@ -64,7 +67,8 @@ void ServiceWorkerRequestHandler::InitializeHandler(
     ResourceType resource_type,
     RequestContextType request_context_type,
     RequestContextFrameType frame_type,
-    scoped_refptr<ResourceRequestBody> body) {
+    scoped_refptr<ResourceRequestBody> body,
+    NavigationURLLoaderImplCore* loader) {
   if (!OriginCanAccessServiceWorkers(request->url()))
     return;
 
@@ -73,13 +77,27 @@ void ServiceWorkerRequestHandler::InitializeHandler(
     return;
   }
 
-  ServiceWorkerProviderHost* provider_host =
-      context_wrapper->context()->GetProviderHost(process_id, provider_id);
+  ServiceWorkerProviderHost* provider_host = nullptr;
+  if (provider_id < kInvalidServiceWorkerProviderId) {
+    // PlzNavigate
+    // Initialize a dummy SWProviderHost for browser-initiated navigations.
+    CHECK(base::CommandLine::ForCurrentProcess()->HasSwitch(
+        switches::kEnableBrowserSideNavigation));
+    scoped_ptr<ServiceWorkerProviderHost> scoped_provider_host(
+        context_wrapper->context()->CreateBrowserProviderHost(provider_id));
+    provider_host = scoped_provider_host.get();
+    loader->SetServiceWorkerProviderHost(scoped_provider_host.Pass());
+  } else {
+    provider_host =
+        context_wrapper->context()->GetProviderHost(process_id, provider_id);
+  }
+
   if (!provider_host || !provider_host->IsContextAlive())
     return;
 
   if (skip_service_worker) {
     if (ServiceWorkerUtils::IsMainResourceType(resource_type)) {
+      // TODO(horo): Does this work properly for PlzNavigate?
       provider_host->SetDocumentUrl(net::SimplifyUrlForRequest(request->url()));
       provider_host->SetTopmostFrameUrl(request->first_party_for_cookies());
       // A page load with skip_service_worker should be triggered by