[WIP not ready for review] ServiceWorker Download support.

content/browser/download/download_manager_impl.cc

Index: content/browser/download/download_manager_impl.cc
diff --git a/content/browser/download/download_manager_impl.cc b/content/browser/download/download_manager_impl.cc
index 8131d2740b1bbc811762e9fd9e361eda65287c10..aca05d2741b1a6d8864070ae221af50cebd2c45f 100644
--- a/content/browser/download/download_manager_impl.cc
+++ b/content/browser/download/download_manager_impl.cc
@@ -32,6 +32,7 @@
 #include "content/browser/loader/resource_dispatcher_host_impl.h"
 #include "content/browser/loader/resource_request_info_impl.h"
 #include "content/browser/renderer_host/render_view_host_impl.h"
+#include "content/browser/service_worker/service_worker_context_wrapper.h"
 #include "content/browser/web_contents/web_contents_impl.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/content_browser_client.h"
@@ -42,6 +43,7 @@
 #include "content/public/browser/notification_types.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/resource_context.h"
+#include "content/public/browser/storage_partition.h"
 #include "content/public/browser/web_contents_delegate.h"
 #include "content/public/common/referrer.h"
 #include "net/base/elements_upload_data_stream.h"
@@ -60,6 +62,7 @@ namespace {
 std::unique_ptr<UrlDownloader, BrowserThread::DeleteOnIOThread> BeginDownload(
     std::unique_ptr<DownloadUrlParameters> params,
     content::ResourceContext* resource_context,
+    scoped_refptr<ServiceWorkerContextWrapper> service_worker_context,
     uint32_t download_id,
     base::WeakPtr<DownloadManagerImpl> download_manager) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
@@ -80,9 +83,10 @@ std::unique_ptr<UrlDownloader, BrowserThread::DeleteOnIOThread> BeginDownload(
   if (params->render_process_host_id() >= 0) {
     DownloadInterruptReason reason = DownloadManagerImpl::BeginDownloadRequest(
         std::move(url_request), params->referrer(), resource_context,
-        params->content_initiated(), params->render_process_host_id(),
-        params->render_view_host_routing_id(),
+        service_worker_context.get(), params->content_initiated(),
+        params->render_process_host_id(), params->render_view_host_routing_id(),
         params->render_frame_host_routing_id(),
+        params->service_worker_provider_id(),
         params->do_not_prompt_for_login());
 
     // If the download was accepted, the DownloadResourceHandler is now
@@ -483,7 +487,8 @@ void DownloadManagerImpl::ResumeInterruptedDownload(
   BrowserThread::PostTaskAndReplyWithResult(
       BrowserThread::IO, FROM_HERE,
       base::Bind(&BeginDownload, base::Passed(&params),
-                 browser_context_->GetResourceContext(), id,
+                 browser_context_->GetResourceContext(),
+                 scoped_refptr<ServiceWorkerContextWrapper>(), id,
                  weak_factory_.GetWeakPtr()),
       base::Bind(&DownloadManagerImpl::AddUrlDownloader,
                  weak_factory_.GetWeakPtr()));
@@ -533,10 +538,12 @@ DownloadInterruptReason DownloadManagerImpl::BeginDownloadRequest(
     std::unique_ptr<net::URLRequest> url_request,
     const Referrer& referrer,
     ResourceContext* resource_context,
+    ServiceWorkerContextWrapper* service_worker_context,
     bool is_content_initiated,
     int render_process_id,
     int render_view_route_id,
     int render_frame_route_id,
+    int service_worker_provider_id,
     bool do_not_prompt_for_login) {
   if (ResourceDispatcherHostImpl::Get()->is_shutdown())
     return DOWNLOAD_INTERRUPT_REASON_USER_SHUTDOWN;
@@ -547,7 +554,7 @@ DownloadInterruptReason DownloadManagerImpl::BeginDownloadRequest(
       url_request.get(), referrer,
       true,  // download.
       render_process_id, render_view_route_id, render_frame_route_id,
-      resource_context);
+      service_worker_provider_id, resource_context, service_worker_context);
 
   // We treat a download as a main frame load, and thus update the policy URL on
   // redirects.
@@ -645,6 +652,16 @@ int DownloadManagerImpl::RemoveAllDownloads() {
 
 void DownloadManagerImpl::DownloadUrl(
     std::unique_ptr<DownloadUrlParameters> params) {
+  scoped_refptr<ServiceWorkerContextWrapper> service_worker_context;
+  RenderProcessHost* render_process_host =
+      RenderProcessHost::FromID(params->render_process_host_id());
+  if (render_process_host) {
+    StoragePartition* partition = render_process_host->GetStoragePartition();
+    if (partition) {
+      service_worker_context = static_cast<ServiceWorkerContextWrapper*>(
+          partition->GetServiceWorkerContext());
+    }
+  }
   if (params->post_id() >= 0) {
     // Check this here so that the traceback is more useful.
     DCHECK(params->prefer_cache());
@@ -654,6 +671,7 @@ void DownloadManagerImpl::DownloadUrl(
       BrowserThread::IO, FROM_HERE,
       base::Bind(&BeginDownload, base::Passed(&params),
                  browser_context_->GetResourceContext(),
+                 std::move(service_worker_context),
                  content::DownloadItem::kInvalidId, weak_factory_.GetWeakPtr()),
       base::Bind(&DownloadManagerImpl::AddUrlDownloader,
                  weak_factory_.GetWeakPtr()));