Small cleanup to extension function registration to avoid scattered definitions.

chrome/browser/extensions/extension_browser_actions_api.h

Index: chrome/browser/extensions/extension_browser_actions_api.h
diff --git a/chrome/browser/extensions/extension_browser_actions_api.h b/chrome/browser/extensions/extension_browser_actions_api.h
index e08baa425c4a952c46aa438485952cd40cb21890..c5193d692240807a2ee97716a738cab3c9f3b09e 100755
--- a/chrome/browser/extensions/extension_browser_actions_api.h
+++ b/chrome/browser/extensions/extension_browser_actions_api.h
@@ -9,29 +9,23 @@
 
 class BrowserActionSetNameFunction : public SyncExtensionFunction {
   virtual bool RunImpl();
+  DECLARE_EXTENSION_FUNCTION_NAME("browserAction.setName")
 };
 
 class BrowserActionSetIconFunction : public SyncExtensionFunction {
   virtual bool RunImpl();
+  DECLARE_EXTENSION_FUNCTION_NAME("browserAction.setIcon")
 };
 
 class BrowserActionSetBadgeTextFunction : public SyncExtensionFunction {
   virtual bool RunImpl();
+  DECLARE_EXTENSION_FUNCTION_NAME("browserAction.setBadgeText")
 };
 
 class BrowserActionSetBadgeBackgroundColorFunction
     : public SyncExtensionFunction {
   virtual bool RunImpl();
+  DECLARE_EXTENSION_FUNCTION_NAME("browserAction.setBadgeBackgroundColor")
 };
 
-namespace extension_browser_actions_api_constants {
-
-// Function names.
-extern const char kSetNameFunction[];
-extern const char kSetIconFunction[];
-extern const char kSetBadgeTextFunction[];
-extern const char kSetBadgeBackgroundColorFunction[];
-
-};  // namespace extension_browser_actions_api_constants
-
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_BROWSER_ACTIONS_API_H_