PlzNavigate: detect when a ServiceWorker is present

content/child/service_worker/service_worker_network_provider.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/child/service_worker/service_worker_network_provider.h"
 
 #include "base/atomic_sequence_num.h"
 #include "content/child/child_thread_impl.h"
 #include "content/child/service_worker/service_worker_provider_context.h"
-#include "content/common/navigation_params.h"
 #include "content/common/service_worker/service_worker_messages.h"
 #include "content/common/service_worker/service_worker_utils.h"
 #include "content/public/common/browser_side_navigation_policy.h"
 #include "third_party/WebKit/public/platform/WebSecurityOrigin.h"
 #include "third_party/WebKit/public/web/WebLocalFrame.h"
 #include "third_party/WebKit/public/web/WebSandboxFlags.h"
 
 namespace content {
 
 namespace {
@@ skipping 30 matching lines @@
 ServiceWorkerNetworkProvider* ServiceWorkerNetworkProvider::FromDocumentState(
     base::SupportsUserData* datasource_userdata) {
   return static_cast<ServiceWorkerNetworkProvider*>(
       datasource_userdata->GetUserData(&kUserDataKey));
 }
 
 // static
 std::unique_ptr<ServiceWorkerNetworkProvider>
 ServiceWorkerNetworkProvider::CreateForNavigation(
     int route_id,
-    const RequestNavigationParams& request_params,
     blink::WebLocalFrame* frame,
     bool content_initiated) {
-  bool browser_side_navigation = IsBrowserSideNavigationEnabled();
-  bool should_create_provider_for_window = false;
-  int service_worker_provider_id = kInvalidServiceWorkerProviderId;
-  std::unique_ptr<ServiceWorkerNetworkProvider> network_provider;
-
   // Determine if a ServiceWorkerNetworkProvider should be created and properly
   // initialized for the navigation. A default ServiceWorkerNetworkProvider
   // will always be created since it is expected in a certain number of places,
   // however it will have an invalid id.
-  // PlzNavigate: |service_worker_provider_id| can be sent by the browser, if
-  // it already created the SeviceWorkerProviderHost.
-  if (browser_side_navigation && !content_initiated) {
-    should_create_provider_for_window =
-        request_params.should_create_service_worker;
-    service_worker_provider_id = request_params.service_worker_provider_id;
-    DCHECK(ServiceWorkerUtils::IsBrowserAssignedProviderId(
-               service_worker_provider_id) ||
-           service_worker_provider_id == kInvalidServiceWorkerProviderId);
-  } else {
-    should_create_provider_for_window =
-        ((frame->effectiveSandboxFlags() & blink::WebSandboxFlags::Origin) !=
-         blink::WebSandboxFlags::Origin);
-  }
+  bool should_create_provider_for_window =
+      ((frame->effectiveSandboxFlags() & blink::WebSandboxFlags::Origin) !=
+       blink::WebSandboxFlags::Origin);
 
   // Now create the ServiceWorkerNetworkProvider (with invalid id if needed).
+  std::unique_ptr<ServiceWorkerNetworkProvider> network_provider;
   if (should_create_provider_for_window) {
     // Ideally Document::isSecureContext would be called here, but the document
     // is not created yet, and due to redirects the URL may change. So pass
     // is_parent_frame_secure to the browser process, so it can determine the
     // context security when deciding whether to allow a service worker to
     // control the document.
     const bool is_parent_frame_secure = IsFrameSecure(frame->parent());
 
-    if (service_worker_provider_id == kInvalidServiceWorkerProviderId) {
-      network_provider = std::unique_ptr<ServiceWorkerNetworkProvider>(
-          new ServiceWorkerNetworkProvider(route_id,
-                                           SERVICE_WORKER_PROVIDER_FOR_WINDOW,
-                                           is_parent_frame_secure));
-    } else {
-      CHECK(browser_side_navigation);
-      DCHECK(ServiceWorkerUtils::IsBrowserAssignedProviderId(
-          service_worker_provider_id));
-      network_provider = std::unique_ptr<ServiceWorkerNetworkProvider>(
-          new ServiceWorkerNetworkProvider(
-              route_id, SERVICE_WORKER_PROVIDER_FOR_WINDOW,
-              service_worker_provider_id, is_parent_frame_secure));
-    }
+    network_provider = std::unique_ptr<ServiceWorkerNetworkProvider>(
+        new ServiceWorkerNetworkProvider(route_id,
+                                         SERVICE_WORKER_PROVIDER_FOR_WINDOW,
+                                         is_parent_frame_secure));
   } else {
     network_provider = std::unique_ptr<ServiceWorkerNetworkProvider>(
         new ServiceWorkerNetworkProvider());
   }
   return network_provider;
 }
 
 ServiceWorkerNetworkProvider::ServiceWorkerNetworkProvider(
     int route_id,
     ServiceWorkerProviderType provider_type,
-    int browser_provider_id,
     bool is_parent_frame_secure)
-    : provider_id_(browser_provider_id) {
-  if (provider_id_ == kInvalidServiceWorkerProviderId)
-    return;
+    : provider_id_(GetNextProviderId()) {
+  DCHECK(provider_id_ != kInvalidServiceWorkerProviderId);
   if (!ChildThreadImpl::current())
     return;  // May be null in some tests.
   context_ = new ServiceWorkerProviderContext(
       provider_id_, provider_type,
       ChildThreadImpl::current()->thread_safe_sender());
   ChildThreadImpl::current()->Send(new ServiceWorkerHostMsg_ProviderCreated(
       provider_id_, route_id, provider_type, is_parent_frame_secure));
 }
 
-ServiceWorkerNetworkProvider::ServiceWorkerNetworkProvider(
-    int route_id,
-    ServiceWorkerProviderType provider_type,
-    bool is_parent_frame_secure)
-    : ServiceWorkerNetworkProvider(route_id,
-                                   provider_type,
-                                   GetNextProviderId(),
-                                   is_parent_frame_secure) {}
-
 ServiceWorkerNetworkProvider::ServiceWorkerNetworkProvider()
     : provider_id_(kInvalidServiceWorkerProviderId) {}
 
 ServiceWorkerNetworkProvider::~ServiceWorkerNetworkProvider() {
   if (provider_id_ == kInvalidServiceWorkerProviderId)
     return;
   if (!ChildThreadImpl::current())
     return;  // May be null in some tests.
   ChildThreadImpl::current()->Send(
       new ServiceWorkerHostMsg_ProviderDestroyed(provider_id_));
 }
 
 void ServiceWorkerNetworkProvider::SetServiceWorkerVersionId(
     int64_t version_id) {
   DCHECK_NE(kInvalidServiceWorkerProviderId, provider_id_);
   if (!ChildThreadImpl::current())
     return;  // May be null in some tests.
   ChildThreadImpl::current()->Send(
       new ServiceWorkerHostMsg_SetVersionId(provider_id_, version_id));
 }
 
 bool ServiceWorkerNetworkProvider::IsControlledByServiceWorker() const {
   return context() && context()->controller();
 }
 
 }  // namespace content