Fix the build error of athena on chrome.

athena/extensions/chrome/extensions_delegate_impl.cc

Index: athena/extensions/chrome/extensions_delegate_impl.cc
diff --git a/athena/extensions/chrome/extensions_delegate_impl.cc b/athena/extensions/chrome/extensions_delegate_impl.cc
index 9313862937ece4f638fb83c8d9ab8d480858a724..de97c306f299a8ad3d548346d7f78b7cf53abea8 100644
--- a/athena/extensions/chrome/extensions_delegate_impl.cc
+++ b/athena/extensions/chrome/extensions_delegate_impl.cc
@@ -13,6 +13,7 @@
 #include "chrome/common/extensions/manifest_handlers/app_launch_info.h"
 #include "extensions/browser/extension_registry.h"
 #include "extensions/browser/extension_system.h"
+#include "extensions/common/constants.h"
 #include "extensions/common/extension_set.h"
 #include "extensions/common/extension_urls.h"
 #include "net/base/url_util.h"
@@ -59,7 +60,7 @@ class ChromeExtensionsDelegate : public ExtensionsDelegate {
                            chrome::HOST_DESKTOP_TYPE_ASH);
     // TODO(oshima): rename HOST_DESTOP_TYPE_ASH to non native desktop.
 
-    if (app_id == extension_misc::kWebStoreAppId) {
+    if (app_id == extensions::kWebStoreAppId) {
       std::string source_value =
           std::string(extension_urls::kLaunchSourceAppList);
       // Set an override URL to include the source.