Fix unittest-only leak in ExtensionSettingsUIWrapper.

chrome/browser/extensions/extension_settings_ui_wrapper.cc

Index: chrome/browser/extensions/extension_settings_ui_wrapper.cc
diff --git a/chrome/browser/extensions/extension_settings_ui_wrapper.cc b/chrome/browser/extensions/extension_settings_ui_wrapper.cc
index 20cad1e35878ebc21c7b93e08bb3e610ab975e6f..c9fe62d6dac9526b5047ce9acf4beda9fdc83825 100644
--- a/chrome/browser/extensions/extension_settings_ui_wrapper.cc
+++ b/chrome/browser/extensions/extension_settings_ui_wrapper.cc
@@ -58,8 +58,12 @@ void ExtensionSettingsUIWrapper::Core::RunWithSettingsOnFileThread(
 }
 
 ExtensionSettingsUIWrapper::Core::~Core() {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI) ||
-      BrowserThread::CurrentlyOn(BrowserThread::FILE));
-  BrowserThread::DeleteSoon(
-      BrowserThread::FILE, FROM_HERE, extension_settings_);
+  if (BrowserThread::CurrentlyOn(BrowserThread::FILE)) {
+    delete extension_settings_;
+  } else if (BrowserThread::CurrentlyOn(BrowserThread::UI)) {
+    BrowserThread::DeleteSoon(
+        BrowserThread::FILE, FROM_HERE, extension_settings_);
+  } else {
+    NOTREACHED();
+  }
 }