Move c/r/extensions/* into extensions namespace

chrome/renderer/extensions/api_definitions_natives.h

Index: chrome/renderer/extensions/api_definitions_natives.h
diff --git a/chrome/renderer/extensions/api_definitions_natives.h b/chrome/renderer/extensions/api_definitions_natives.h
index f554118a5a607b01e3783adc6a23ff8c9572a3ef..45b46b675683677ac9af2433281d995d6505468b 100644
--- a/chrome/renderer/extensions/api_definitions_natives.h
+++ b/chrome/renderer/extensions/api_definitions_natives.h
@@ -6,7 +6,7 @@
 #define CHROME_RENDERER_EXTENSIONS_API_DEFINITIONS_NATIVES_H_
 
 #include "chrome/renderer/extensions/chrome_v8_extension.h"
-#include "chrome/renderer/extensions/extension_dispatcher.h"
+#include "chrome/renderer/extensions/dispatcher.h"
 
 #include "v8/include/v8.h"
 
@@ -15,7 +15,7 @@ namespace extensions {
 // Native functions for JS to get access to the schemas for extension APIs.
 class ApiDefinitionsNatives : public ChromeV8Extension {
  public:
-  explicit ApiDefinitionsNatives(ExtensionDispatcher* extension_dispatcher);
+  explicit ApiDefinitionsNatives(Dispatcher* dispatcher);
 
  private:
   // Returns the list of schemas that are available to the calling context