Small cleanup to extension function registration to avoid scattered definitions.

chrome/browser/extensions/extension_browser_actions_api.cc

Index: chrome/browser/extensions/extension_browser_actions_api.cc
diff --git a/chrome/browser/extensions/extension_browser_actions_api.cc b/chrome/browser/extensions/extension_browser_actions_api.cc
index 0a940266ebaecbd7e0b3c94ed341fa5f1d65a005..e671d15e71308588b12928fb52aba1f3cfa00d06 100644
--- a/chrome/browser/extensions/extension_browser_actions_api.cc
+++ b/chrome/browser/extensions/extension_browser_actions_api.cc
@@ -9,16 +9,6 @@
 #include "chrome/common/notification_service.h"
 #include "chrome/common/render_messages.h"
 
-namespace extension_browser_actions_api_constants {
-
-const char kSetNameFunction[] = "browserAction.setName";
-const char kSetIconFunction[] = "browserAction.setIcon";
-const char kSetBadgeTextFunction[] = "browserAction.setBadgeText";
-const char kSetBadgeBackgroundColorFunction[] =
-    "browserAction.setBadgeBackgroundColor";
-
-}  // namespace extension_browser_actions_api_constants
-
 namespace {
 // Errors.
 const char kNoBrowserActionError[] =