Move Extension into extensions namespace

chrome/browser/extensions/crx_installer_browsertest.cc

Index: chrome/browser/extensions/crx_installer_browsertest.cc
diff --git a/chrome/browser/extensions/crx_installer_browsertest.cc b/chrome/browser/extensions/crx_installer_browsertest.cc
index efaaf0a4c8fa774ed1cb11cfc7e6d78c4adc184f..8a0c4bd1e3228d8bc7144e6de637058d3f644115 100644
--- a/chrome/browser/extensions/crx_installer_browsertest.cc
+++ b/chrome/browser/extensions/crx_installer_browsertest.cc
@@ -32,11 +32,13 @@ class MockInstallUI : public ExtensionInstallUI {
   bool confirmation_requested() { return confirmation_requested_; }
 
   // Overriding some of the ExtensionInstallUI API.
-  void ConfirmInstall(Delegate* delegate, const Extension* extension) {
+  void ConfirmInstall(Delegate* delegate,
+                      const extensions::Extension* extension) {
     confirmation_requested_ = true;
     delegate->InstallUIProceed();
   }
-  void OnInstallSuccess(const Extension* extension, SkBitmap* icon) {
+  void OnInstallSuccess(const extensions::Extension* extension,
+                        SkBitmap* icon) {
     MessageLoopForUI::current()->Quit();
   }
   void OnInstallFailure(const string16& error) {