Add the beginning of a public Service Worker API.

content/public/browser/service_worker_context.h

Index: content/public/browser/service_worker_context.h
diff --git a/content/browser/service_worker/service_worker_context.h b/content/public/browser/service_worker_context.h
similarity index 25%
rename from content/browser/service_worker/service_worker_context.h
rename to content/public/browser/service_worker_context.h
index d9f51f3165c14c89f134d2d74807bceb7a8a2b69..36f4a25c5cc2bc01b2e32cb439dc8248f8c429ef 100644
--- a/content/browser/service_worker/service_worker_context.h
+++ b/content/public/browser/service_worker_context.h
@@ -2,18 +2,39 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_CONTEXT_H_
-#define CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_CONTEXT_H_
+#ifndef CONTENT_PUBLIC_BROWSER_SERVICE_WORKER_CONTEXT_H_
+#define CONTENT_PUBLIC_BROWSER_SERVICE_WORKER_CONTEXT_H_
 
 #include "base/basictypes.h"
+#include "base/callback_forward.h"
+#include "content/public/common/service_worker_status_code.h"
+#include "url/gurl.h"
 
 namespace content {
 
-// Represents the per-BrowserContext ServiceWorker data.
+// Represents the per-StoragePartition ServiceWorker data.  Must be used from
+// the UI thread.
 class ServiceWorkerContext {
  public:
-  // TODO(michaeln): This class is a place holder for content/public api
-  // which will come later. Promote this class when we get there.
+  // https://rawgithub.com/slightlyoff/ServiceWorker/master/spec/service_worker/index.html#url-scope:
+  // roughly, must be of the form "<origin>/<path>/*".
+  typedef GURL Scope;
+
+  typedef base::Callback<void(ServiceWorkerStatusCode status)>
+      RegistrationCallback;
+  virtual void RegisterServiceWorker(const Scope& pattern,
+                                     const GURL& script_url,
+                                     int source_process_id,
+                                     const RegistrationCallback& callback) = 0;
+
+  typedef base::Callback<void(ServiceWorkerStatusCode status)>
+      UnregistrationCallback;
+  virtual void UnregisterServiceWorker(
+      const GURL& pattern,
+      int source_process_id,
+      const UnregistrationCallback& callback) = 0;
+
+  // TODO(jyasskin): Provide a way to SendMessage to a Scope.
 
  protected:
   ServiceWorkerContext() {}
@@ -25,4 +46,4 @@ class ServiceWorkerContext {
 
 }  // namespace content
 
-#endif  // CONTENT_BROWSER_SERVICE_WORKER_SERVICE_WORKER_CONTEXT_H_
+#endif  // CONTENT_PUBLIC_BROWSER_SERVICE_WORKER_CONTEXT_H_