[sessions] Remove most knowledge of //chrome from core tab restore code

chrome/browser/sessions/chrome_tab_restore_service_client.cc

Index: chrome/browser/sessions/chrome_tab_restore_service_client.cc
diff --git a/chrome/browser/sessions/chrome_tab_restore_service_client.cc b/chrome/browser/sessions/chrome_tab_restore_service_client.cc
index 1eb5e910082b2ecafaa4e8cb77f4603826361d74..bad6bb265580ad2d01104c84a70808b1cc24bccf 100644
--- a/chrome/browser/sessions/chrome_tab_restore_service_client.cc
+++ b/chrome/browser/sessions/chrome_tab_restore_service_client.cc
@@ -7,12 +7,47 @@
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/sessions/session_service.h"
 #include "chrome/browser/sessions/session_service_factory.h"
+#include "chrome/common/url_constants.h"
+
+#if defined(ENABLE_EXTENSIONS)
+#include "chrome/common/extensions/extension_constants.h"
+#include "chrome/common/extensions/extension_metrics.h"
+#include "extensions/browser/extension_registry.h"
+#include "extensions/common/extension.h"
+#include "extensions/common/extension_set.h"
+#endif
+
+namespace {
+
+void RecordAppLaunch(Profile* profile, const GURL& url) {
+#if defined(ENABLE_EXTENSIONS)
+  const extensions::Extension* extension =
+      extensions::ExtensionRegistry::Get(profile)
+          ->enabled_extensions()
+          .GetAppByURL(url);
+  if (!extension)
+    return;
+
+  extensions::RecordAppLaunchType(
+      extension_misc::APP_LAUNCH_NTP_RECENTLY_CLOSED, extension->GetType());
+#endif  // defined(ENABLE_EXTENSIONS)
+}
+
+}  // namespace
 
 ChromeTabRestoreServiceClient::ChromeTabRestoreServiceClient(Profile* profile)
     : profile_(profile) {}
 
 ChromeTabRestoreServiceClient::~ChromeTabRestoreServiceClient() {}
 
+base::FilePath ChromeTabRestoreServiceClient::GetPathToSaveTo() {
+  return profile_->GetPath();
+}
+
+GURL ChromeTabRestoreServiceClient::GetNewTabURL() {
+  return GURL(chrome::kChromeUINewTabURL);
+}
+
 bool ChromeTabRestoreServiceClient::HasLastSession() {
 #if defined(ENABLE_SESSION_SERVICE)
   SessionService* session_service =
@@ -39,3 +74,7 @@ void ChromeTabRestoreServiceClient::GetLastSession(
       ->GetLastSession(callback, tracker);
 #endif
 }
+
+void ChromeTabRestoreServiceClient::OnTabRestored(const GURL& url) {
+  RecordAppLaunch(profile_, url);
+}