[WIP2] off-main-thread loading

third_party/WebKit/Source/core/loader/WorkerFetchContext.cpp

Index: third_party/WebKit/Source/core/loader/WorkerFetchContext.cpp
diff --git a/third_party/WebKit/Source/core/loader/WorkerFetchContext.cpp b/third_party/WebKit/Source/core/loader/WorkerFetchContext.cpp
index 9f21b6665a3165a2db2e9d5eefa2935a9790a0b4..5cba674025534963fdda16443e6db50129ec17cf 100644
--- a/third_party/WebKit/Source/core/loader/WorkerFetchContext.cpp
+++ b/third_party/WebKit/Source/core/loader/WorkerFetchContext.cpp
@@ -7,14 +7,17 @@
 #include "core/frame/Deprecation.h"
 #include "core/frame/UseCounter.h"
 #include "core/loader/MixedContentChecker.h"
+#include "core/probe/CoreProbes.h"
 #include "core/timing/WorkerGlobalScopePerformance.h"
 #include "core/workers/WorkerClients.h"
 #include "core/workers/WorkerGlobalScope.h"
+#include "platform/RuntimeEnabledFeatures.h"
 #include "platform/Supplementable.h"
 #include "platform/WebTaskRunner.h"
 #include "platform/exported/WrappedResourceRequest.h"
 #include "platform/loader/fetch/ResourceFetcher.h"
 #include "platform/scheduler/child/web_scheduler.h"
+#include "platform/weborigin/SecurityPolicy.h"
 #include "public/platform/Platform.h"
 #include "public/platform/WebMixedContent.h"
 #include "public/platform/WebMixedContentContextType.h"
@@ -122,15 +125,18 @@ SecurityContext* WorkerFetchContext::GetParentSecurityContext() const {
 
 bool WorkerFetchContext::ShouldBlockRequestByInspector(
     const ResourceRequest& resource_request) const {
-  // TODO(horo): Implement this.
-  return false;
+  bool should_block_request = false;
+  probe::shouldBlockRequest(worker_global_scope_, resource_request,
+                            &should_block_request);
+  return should_block_request;
 }
 
 void WorkerFetchContext::DispatchDidBlockRequest(
     const ResourceRequest& resource_request,
     const FetchInitiatorInfo& fetch_initiator_info,
     ResourceRequestBlockedReason blocked_reason) const {
-  // TODO(horo): Implement this.
+  probe::didBlockRequest(worker_global_scope_, resource_request, nullptr,
+                         fetch_initiator_info, blocked_reason);
 }
 
 void WorkerFetchContext::ReportLocalLoadFailed(const KURL&) const {
@@ -174,6 +180,11 @@ bool WorkerFetchContext::IsControlledByServiceWorker() const {
 
 void WorkerFetchContext::PrepareRequest(ResourceRequest& request,
                                         RedirectType) {
+  String user_agent = worker_global_scope_->UserAgent();
+  probe::applyUserAgentOverride(worker_global_scope_, &user_agent);
+  DCHECK(!user_agent.IsNull());
+  request.SetHTTPUserAgent(AtomicString(user_agent));
+
   request.OverrideLoadingIPCType(WebURLRequest::LoadingIPCType::kMojo);
   WrappedResourceRequest webreq(request);
   web_context_->WillSendRequest(webreq);
@@ -183,6 +194,12 @@ RefPtr<WebTaskRunner> WorkerFetchContext::LoadingTaskRunner() const {
   return loading_task_runner_;
 }
 
+int64_t WorkerFetchContext::ServiceWorkerID() const {
+  // TODO(horo): ServiceWorkerID() is used only for memory cache which is
+  // disabled in worker thread. So we should remove this method.
+  return web_context_->ServiceWorkerID();
+}
+
 void WorkerFetchContext::AddAdditionalRequestHeaders(ResourceRequest& request,
                                                      FetchResourceType type) {
   BaseFetchContext::AddAdditionalRequestHeaders(request, type);
@@ -195,6 +212,15 @@ void WorkerFetchContext::AddAdditionalRequestHeaders(ResourceRequest& request,
     request.SetHTTPHeaderField("Save-Data", "on");
 }
 
+void WorkerFetchContext::DispatchWillSendRequest(
+    unsigned long identifier,
+    ResourceRequest& request,
+    const ResourceResponse& redirect_response,
+    const FetchInitiatorInfo& initiator_info) {
+  probe::willSendRequest(worker_global_scope_, identifier, nullptr, request,
+                         redirect_response, initiator_info);
+}
+
 void WorkerFetchContext::DispatchDidReceiveResponse(
     unsigned long identifier,
     const ResourceResponse& response,
@@ -212,6 +238,38 @@ void WorkerFetchContext::DispatchDidReceiveResponse(
       web_context_->DidDisplayContentWithCertificateErrors(response.Url());
     }
   }
+  probe::didReceiveResourceResponse(worker_global_scope_, identifier, nullptr,
+                                    response, resource);
+}
+
+void WorkerFetchContext::DispatchDidReceiveData(unsigned long identifier,
+                                                const char* data,
+                                                int data_length) {
+  probe::didReceiveData(worker_global_scope_, identifier, nullptr, data,
+                        data_length);
+}
+
+void WorkerFetchContext::DispatchDidReceiveEncodedData(
+    unsigned long identifier,
+    int encoded_data_length) {
+  probe::didReceiveEncodedDataLength(worker_global_scope_, identifier,
+                                     encoded_data_length);
+}
+
+void WorkerFetchContext::DispatchDidFinishLoading(unsigned long identifier,
+                                                  double finish_time,
+                                                  int64_t encoded_data_length,
+                                                  int64_t decoded_body_length) {
+  probe::didFinishLoading(worker_global_scope_, identifier, nullptr,
+                          finish_time, encoded_data_length,
+                          decoded_body_length);
+}
+
+void WorkerFetchContext::DispatchDidFail(unsigned long identifier,
+                                         const ResourceError& error,
+                                         int64_t encoded_data_length,
+                                         bool is_internal_request) {
+  probe::didFailLoading(worker_global_scope_, identifier, error);
 }
 
 void WorkerFetchContext::AddResourceTiming(const ResourceTimingInfo& info) {
@@ -239,6 +297,7 @@ void WorkerFetchContext::SetFirstPartyCookieAndRequestorOrigin(
   // `isNull()` check. https://crbug.com/625969
   if (out_request.RequestorOrigin()->IsUnique())
     out_request.SetRequestorOrigin(GetSecurityOrigin());
+  // TODO: Sandboxed flag?
 }
 
 DEFINE_TRACE(WorkerFetchContext) {