BUG=94920

chrome/browser/extensions/crx_installer.cc

 // Copyright (c) 2011 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 "chrome/browser/extensions/crx_installer.h"
 
 #include <map>
 #include <set>
 
 #include "base/file_util.h"
@@ skipping 13 matching lines @@
 #include "chrome/browser/extensions/convert_web_app.h"
 #include "chrome/browser/extensions/extension_error_reporter.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/shell_integration.h"
 #include "chrome/browser/web_applications/web_app.h"
 #include "chrome/common/chrome_notification_types.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/extensions/extension_constants.h"
 #include "chrome/common/extensions/extension_file_util.h"
 #include "content/browser/browser_thread.h"
+#include "content/browser/user_metrics.h"
 #include "content/common/notification_service.h"
 #include "grit/chromium_strings.h"
 #include "grit/generated_resources.h"
 #include "grit/theme_resources.h"
 #include "third_party/skia/include/core/SkBitmap.h"
 #include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
 
 namespace {
 
@@ skipping 487 matching lines @@
   ExtensionErrorReporter::GetInstance()->ReportError(error, false);  // quiet
 
   if (client_)
     client_->OnInstallFailure(error);
 
   NotifyCrxInstallComplete();
 }
 
 void CrxInstaller::ReportSuccessFromFileThread() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
+
+  // Tracking number of extensions installed by users
+  if (install_cause() == extension_misc::INSTALL_CAUSE_USER_DOWNLOAD) {
+    UserMetrics::RecordAction(
+        UserMetricsAction("Extensions.ExtensionInstalled"));
+  }
+
   if (!BrowserThread::PostTask(
           BrowserThread::UI, FROM_HERE,
           NewRunnableMethod(this,
                             &CrxInstaller::ReportSuccessFromUIThread)))
     NOTREACHED();
 }
 
 void CrxInstaller::ReportSuccessFromUIThread() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
@@ skipping 27 matching lines @@
   // Some users (such as the download shelf) need to know when a
   // CRXInstaller is done.  Listening for the EXTENSION_* events
   // is problematic because they don't know anything about the
   // extension before it is unpacked, so they can not filter based
   // on the extension.
   NotificationService::current()->Notify(
       chrome::NOTIFICATION_CRX_INSTALLER_DONE,
       Source<CrxInstaller>(this),
       NotificationService::NoDetails());
 }