Cleanup many APIs to use ProfileKeyedAPI.

chrome/browser/extensions/api/sync_file_system/extension_sync_event_observer.cc

Index: chrome/browser/extensions/api/sync_file_system/extension_sync_event_observer.cc
diff --git a/chrome/browser/extensions/api/sync_file_system/extension_sync_event_observer.cc b/chrome/browser/extensions/api/sync_file_system/extension_sync_event_observer.cc
index c5fe516a0038c7c38eb3772f64a83c11f50cf513..7af956a0dfddbc4a398993e94fe8bf865b3bec05 100644
--- a/chrome/browser/extensions/api/sync_file_system/extension_sync_event_observer.cc
+++ b/chrome/browser/extensions/api/sync_file_system/extension_sync_event_observer.cc
@@ -4,16 +4,20 @@
 
 #include "chrome/browser/extensions/api/sync_file_system/extension_sync_event_observer.h"
 
+#include "base/lazy_instance.h"
 #include "chrome/browser/extensions/api/sync_file_system/sync_file_system_api_helpers.h"
 #include "chrome/browser/extensions/event_names.h"
 #include "chrome/browser/extensions/extension_service.h"
-#include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/sync_file_system/sync_event_observer.h"
 #include "chrome/browser/sync_file_system/sync_file_system_service.h"
+#include "chrome/browser/sync_file_system/sync_file_system_service_factory.h"
 #include "chrome/browser/sync_file_system/syncable_file_system_util.h"
 #include "chrome/common/extensions/api/sync_file_system.h"
+#include "content/public/browser/browser_context.h"
 #include "extensions/browser/event_router.h"
 #include "extensions/browser/extension_system.h"
+#include "extensions/browser/extension_system_provider.h"
+#include "extensions/browser/extensions_browser_client.h"
 #include "webkit/browser/fileapi/file_system_url.h"
 #include "webkit/common/fileapi/file_system_util.h"
 
@@ -21,10 +25,18 @@ using sync_file_system::SyncEventObserver;
 
 namespace extensions {
 
+static base::LazyInstance<ProfileKeyedAPIFactory<ExtensionSyncEventObserver> >
+    g_factory = LAZY_INSTANCE_INITIALIZER;
+
+// static
+ProfileKeyedAPIFactory<ExtensionSyncEventObserver>*
+ExtensionSyncEventObserver::GetFactoryInstance() {
+  return g_factory.Pointer();
+}
+
 ExtensionSyncEventObserver::ExtensionSyncEventObserver(
-    Profile* profile)
-    : profile_(profile),
-      sync_service_(NULL) {}
+    content::BrowserContext* context)
+    : browser_context_(context), sync_service_(NULL) {}
 
 void ExtensionSyncEventObserver::InitializeForService(
     sync_file_system::SyncFileSystemService* sync_service) {
@@ -46,8 +58,9 @@ void ExtensionSyncEventObserver::Shutdown() {
 
 std::string ExtensionSyncEventObserver::GetExtensionId(
     const GURL& app_origin) {
-  const Extension* app = ExtensionSystem::Get(profile_)->extension_service()->
-      GetInstalledApp(app_origin);
+  const Extension* app = ExtensionSystem::Get(browser_context_)
+                             ->extension_service()
+                             ->GetInstalledApp(app_origin);
   if (!app) {
     // The app is uninstalled or disabled.
     return std::string();
@@ -107,11 +120,12 @@ void ExtensionSyncEventObserver::BroadcastOrDispatchEvent(
   // Check to see whether the event should be broadcasted to all listening
   // extensions or sent to a specific extension ID.
   bool broadcast_mode = app_origin.is_empty();
-  EventRouter* event_router = ExtensionSystem::Get(profile_)->event_router();
+  EventRouter* event_router =
+      ExtensionSystem::Get(browser_context_)->event_router();
   DCHECK(event_router);
 
   scoped_ptr<Event> event(new Event(event_name, values.Pass()));
-  event->restrict_to_browser_context = profile_;
+  event->restrict_to_browser_context = browser_context_;
 
   // No app_origin, broadcast to all listening extensions for this event name.
   if (broadcast_mode) {
@@ -126,4 +140,11 @@ void ExtensionSyncEventObserver::BroadcastOrDispatchEvent(
   event_router->DispatchEventToExtension(extension_id, event.Pass());
 }
 
+template <>
+void ProfileKeyedAPIFactory<
+    ExtensionSyncEventObserver>::DeclareFactoryDependencies() {
+  DependsOn(sync_file_system::SyncFileSystemServiceFactory::GetInstance());
+  DependsOn(ExtensionsBrowserClient::Get()->GetExtensionSystemFactory());
+}
+
 }  // namespace extensions