Revert of "Speculatively launch Service Workers on mouse/touch events."

content/browser/service_worker/service_worker_context_wrapper.cc

 // Copyright 2013 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/browser/service_worker/service_worker_context_wrapper.h"
 
 #include <map>
 #include <set>
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "base/barrier_closure.h"
 #include "base/bind.h"
 #include "base/files/file_path.h"
 #include "base/lazy_instance.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/profiler/scoped_tracker.h"
 #include "base/single_thread_task_runner.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "base/threading/thread_task_runner_handle.h"
-#include "content/browser/renderer_host/render_process_host_impl.h"
 #include "content/browser/service_worker/embedded_worker_status.h"
 #include "content/browser/service_worker/service_worker_context_core.h"
 #include "content/browser/service_worker/service_worker_context_observer.h"
 #include "content/browser/service_worker/service_worker_process_manager.h"
 #include "content/browser/service_worker/service_worker_quota_client.h"
 #include "content/browser/service_worker/service_worker_version.h"
 #include "content/browser/storage_partition_impl.h"
 #include "content/common/service_worker/service_worker_utils.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/browser_thread.h"
-#include "content/public/browser/render_process_host.h"
 #include "net/base/url_util.h"
 #include "storage/browser/quota/quota_manager_proxy.h"
 #include "storage/browser/quota/special_storage_policy.h"
-#include "third_party/WebKit/public/platform/WebNavigationHintType.h"
 
 namespace content {
 
 namespace {
 
 typedef std::set<std::string> HeaderNameSet;
 base::LazyInstance<HeaderNameSet>::DestructorAtExit g_excluded_header_name_set =
     LAZY_INSTANCE_INITIALIZER;
 
 void RunSoon(const base::Closure& closure) {
@@ skipping 29 matching lines @@
     ServiceWorkerStatusCode status,
     scoped_refptr<ServiceWorkerRegistration> registration) {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   if (status != SERVICE_WORKER_OK || !registration->waiting_version())
     return;
 
   registration->waiting_version()->set_skip_waiting(true);
   registration->ActivateWaitingVersionWhenReady();
 }
 
-ServiceWorkerMetrics::EventType GetNavigationHintEventType(
-    blink::WebNavigationHintType type) {
-  switch (type) {
-    case blink::WebNavigationHintType::LinkMouseDown:
-      return ServiceWorkerMetrics::EventType::NAVIGATION_HINT_LINK_MOUSE_DOWN;
-    case blink::WebNavigationHintType::LinkTapUnconfirmed:
-      return ServiceWorkerMetrics::EventType::
-          NAVIGATION_HINT_LINK_TAP_UNCONFIRMED;
-    case blink::WebNavigationHintType::LinkTapDown:
-      return ServiceWorkerMetrics::EventType::NAVIGATION_HINT_LINK_TAP_DOWN;
-  }
-  NOTREACHED() << "Unexpected navigation hint" << static_cast<int>(type);
-  return ServiceWorkerMetrics::EventType::UNKNOWN;
-}
-
 }  // namespace
 
 void ServiceWorkerContext::AddExcludedHeadersForFetchEvent(
     const std::set<std::string>& header_names) {
   // TODO(pkasting): Remove ScopedTracker below once crbug.com/477117 is fixed.
   tracked_objects::ScopedTracker tracking_profile(
       FROM_HERE_WITH_EXPLICIT_FUNCTION(
           "477117 ServiceWorkerContext::AddExcludedHeadersForFetchEvent"));
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   g_excluded_header_name_set.Get().insert(header_names.begin(),
@@ skipping 164 matching lines @@
     return;
   }
   if (!context_core_)
     return;
   context_core_->storage()->FindRegistrationForPattern(
       net::SimplifyUrlForRequest(pattern),
       base::Bind(&ServiceWorkerContextWrapper::DidFindRegistrationForUpdate,
                  this));
 }
 
-void ServiceWorkerContextWrapper::StartServiceWorkerForNavigationHint(
-    const GURL& document_url,
-    blink::WebNavigationHintType type,
-    int render_process_id,
-    const ResultCallback& callback) {
-  DCHECK_CURRENTLY_ON(BrowserThread::UI);
-  RenderProcessHost* host = RenderProcessHost::FromID(render_process_id);
-  if (!host ||
-      !RenderProcessHostImpl::IsSuitableHost(host, host->GetBrowserContext(),
-                                             document_url)) {
-    callback.Run(false);
-    return;
-  }
-
-  BrowserThread::PostTask(
-      BrowserThread::IO, FROM_HERE,
-      base::Bind(
-          &ServiceWorkerContextWrapper::DidCheckRenderProcessForNavigationHint,
-          this, document_url, type, render_process_id, callback));
-}
-
-void ServiceWorkerContextWrapper::DidCheckRenderProcessForNavigationHint(
-    const GURL& document_url,
-    blink::WebNavigationHintType type,
-    int render_process_id,
-    const ResultCallback& callback) {
-  DCHECK_CURRENTLY_ON(BrowserThread::IO);
-  if (!context_core_) {
-    BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
-                            base::Bind(callback, false));
-    return;
-  }
-  FindReadyRegistrationForDocument(
-      document_url,
-      base::Bind(
-          &ServiceWorkerContextWrapper::DidFindRegistrationForNavigationHint,
-          this, type, render_process_id, callback));
-}
-
-void ServiceWorkerContextWrapper::DidFindRegistrationForNavigationHint(
-    blink::WebNavigationHintType type,
-    int render_process_id,
-    const ResultCallback& callback,
-    ServiceWorkerStatusCode status,
-    scoped_refptr<ServiceWorkerRegistration> registration) {
-  DCHECK_CURRENTLY_ON(BrowserThread::IO);
-  if (status != SERVICE_WORKER_OK || !registration->active_version()) {
-    BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
-                            base::Bind(callback, false));
-    return;
-  }
-
-  if (registration->active_version()->fetch_handler_existence() ==
-      ServiceWorkerVersion::FetchHandlerExistence::DOES_NOT_EXIST) {
-    BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
-                            base::Bind(callback, false));
-    return;
-  }
-
-  // Add the process reference of |render_process_id| not to launch a new
-  // renderer process for the service worker.
-  context_core_->process_manager()->AddProcessReferenceToPattern(
-      registration->pattern(), render_process_id);
-
-  registration->active_version()->StartWorker(
-      GetNavigationHintEventType(type),
-      base::Bind(
-          &ServiceWorkerContextWrapper::DidStartServiceWorkerForNavigationHint,
-          this, registration->pattern(), render_process_id, callback));
-}
-
-void ServiceWorkerContextWrapper::DidStartServiceWorkerForNavigationHint(
-    const GURL& pattern,
-    int render_process_id,
-    const ResultCallback& callback,
-    ServiceWorkerStatusCode code) {
-  DCHECK_CURRENTLY_ON(BrowserThread::IO);
-
-  // Remove the process reference added in DidFindRegistrationForNavigationHint.
-  context_core_->process_manager()->RemoveProcessReferenceFromPattern(
-      pattern, render_process_id);
-  BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
-                          base::Bind(callback, code == SERVICE_WORKER_OK));
-}
-
 void ServiceWorkerContextWrapper::StartServiceWorker(
     const GURL& pattern,
     const StatusCallback& callback) {
   if (!BrowserThread::CurrentlyOn(BrowserThread::IO)) {
     BrowserThread::PostTask(
         BrowserThread::IO, FROM_HERE,
         base::Bind(&ServiceWorkerContextWrapper::StartServiceWorker, this,
                    pattern, callback));
     return;
   }
@@ skipping 519 matching lines @@
   observer_list_->Notify(FROM_HERE,
                          &ServiceWorkerContextObserver::OnStorageWiped);
 }
 
 ServiceWorkerContextCore* ServiceWorkerContextWrapper::context() {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
   return context_core_.get();
 }
 
 }  // namespace content