Add "UninstallReason" parameter to ExtensionRegistryObserver::OnExtensionUninstalled.

chrome/browser/themes/theme_service_unittest.cc

Index: chrome/browser/themes/theme_service_unittest.cc
diff --git a/chrome/browser/themes/theme_service_unittest.cc b/chrome/browser/themes/theme_service_unittest.cc
index 45f82e4034d3a363d0d735d1f5da6b9b91017548..e4823dc7724e8972a5e1aed89beda2b16c1e2e4c 100644
--- a/chrome/browser/themes/theme_service_unittest.cc
+++ b/chrome/browser/themes/theme_service_unittest.cc
@@ -21,6 +21,7 @@
 #include "chrome/test/base/testing_profile_manager.h"
 #include "content/public/test/test_utils.h"
 #include "extensions/browser/extension_registry.h"
+#include "extensions/browser/uninstall_reason.h"
 #include "extensions/common/extension.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ -120,7 +121,7 @@ TEST_F(ThemeServiceTest, ThemeInstallUninstall) {
 
   // Now uninstall the extension, should revert to the default theme.
   service_->UninstallExtension(
-      extension_id, ExtensionService::UNINSTALL_REASON_FOR_TESTING, NULL);
+      extension_id, extensions::UNINSTALL_REASON_FOR_TESTING, NULL);
   EXPECT_TRUE(theme_service->UsingDefaultTheme());
 }