Move Extension into extensions namespace

chrome/browser/automation/automation_provider_json.h

Index: chrome/browser/automation/automation_provider_json.h
diff --git a/chrome/browser/automation/automation_provider_json.h b/chrome/browser/automation/automation_provider_json.h
index d2ced1bd106b07f191442cab3d271cc6ca65a144..34680a5c55b832a523cea980fb6427cbfdd9e115 100644
--- a/chrome/browser/automation/automation_provider_json.h
+++ b/chrome/browser/automation/automation_provider_json.h
@@ -16,7 +16,6 @@
 class AutomationId;
 class AutomationProvider;
 class Browser;
-class Extension;
 class Profile;
 
 namespace base {
@@ -29,6 +28,10 @@ class RenderViewHost;
 class WebContents;
 }
 
+namespace extensions {
+class Extension;
+}
+
 namespace IPC {
 class Message;
 }
@@ -114,7 +117,7 @@ bool GetExtensionFromJSONArgs(
     base::DictionaryValue* args,
     const std::string& key,
     Profile* profile,
-    const Extension** extension,
+    const extensions::Extension** extension,
     std::string* error) WARN_UNUSED_RESULT;
 
 // Gets the enabled extension specified by the given dictionary |args|. |args|
@@ -125,7 +128,7 @@ bool GetEnabledExtensionFromJSONArgs(
     base::DictionaryValue* args,
     const std::string& key,
     Profile* profile,
-    const Extension** extension,
+    const extensions::Extension** extension,
     std::string* error) WARN_UNUSED_RESULT;
 
 #endif  // CHROME_BROWSER_AUTOMATION_AUTOMATION_PROVIDER_JSON_H_