Move infobar extension API implementation to infobars dir.

chrome/browser/infobars/infobar_extension_api.h

Index: chrome/browser/infobars/infobar_extension_api.h
diff --git a/chrome/browser/extensions/extension_infobar_module.h b/chrome/browser/infobars/infobar_extension_api.h
similarity index 69%
rename from chrome/browser/extensions/extension_infobar_module.h
rename to chrome/browser/infobars/infobar_extension_api.h
index 455d334eaf0cbd490b9700d700641cac9348aec2..7df8d7e8a02117cc8ad96f85eeb0c1059a961d57 100644
--- a/chrome/browser/extensions/extension_infobar_module.h
+++ b/chrome/browser/infobars/infobar_extension_api.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CHROME_BROWSER_EXTENSIONS_EXTENSION_INFOBAR_MODULE_H_
-#define CHROME_BROWSER_EXTENSIONS_EXTENSION_INFOBAR_MODULE_H_
+#ifndef CHROME_BROWSER_INFOBARS_INFOBAR_EXTENSION_API_H_
+#define CHROME_BROWSER_INFOBARS_INFOBAR_EXTENSION_API_H_
 #pragma once
 
 #include "chrome/browser/extensions/extension_function.h"
@@ -14,4 +14,4 @@ class ShowInfoBarFunction : public SyncExtensionFunction {
   DECLARE_EXTENSION_FUNCTION_NAME("experimental.infobars.show")
 };
 
-#endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_INFOBAR_MODULE_H_
+#endif  // CHROME_BROWSER_INFOBARS_INFOBAR_EXTENSION_API_H_