Move c/r/extensions/* into extensions namespace

chrome/renderer/extensions/extension_custom_bindings.h

Index: chrome/renderer/extensions/extension_custom_bindings.h
diff --git a/chrome/renderer/extensions/extension_custom_bindings.h b/chrome/renderer/extensions/extension_custom_bindings.h
index 75695847115e6c302f3c7ee46317fd9358b70053..682b001492a6bec41e5f04532a922fe92b9d9439 100644
--- a/chrome/renderer/extensions/extension_custom_bindings.h
+++ b/chrome/renderer/extensions/extension_custom_bindings.h
@@ -7,14 +7,13 @@
 
 #include "chrome/renderer/extensions/chrome_v8_extension.h"
 
-class ExtensionDispatcher;
-
 namespace extensions {
+class Dispatcher;
 
 // Implements custom bindings for the extension API.
 class ExtensionCustomBindings : public ChromeV8Extension {
  public:
-  explicit ExtensionCustomBindings(ExtensionDispatcher* extension_dispatcher);
+  explicit ExtensionCustomBindings(Dispatcher* dispatcher);
 
  private:
   static v8::Handle<v8::Value> GetExtensionViews(const v8::Arguments& args);