Move WebstoreInstaller, WebstoreInlineInstaller, related in extensions namespace

chrome/browser/extensions/webstore_installer.cc

Index: chrome/browser/extensions/webstore_installer.cc
diff --git a/chrome/browser/extensions/webstore_installer.cc b/chrome/browser/extensions/webstore_installer.cc
index c17fe547dfddda345a1a260c3b6a48294e769da9..faf29c9dc5ed1d79bacb38297503f4d8819412f4 100644
--- a/chrome/browser/extensions/webstore_installer.cc
+++ b/chrome/browser/extensions/webstore_installer.cc
@@ -52,8 +52,6 @@ using content::DownloadUrlParameters;
 
 namespace {
 
-using extensions::Extension;
-
 // Key used to attach the Approval to the DownloadItem.
 const char kApprovalKey[] = "extensions.webstore_installer";
 
@@ -135,6 +133,8 @@ void GetDownloadFilePath(
 
 }  // namespace
 
+namespace extensions {
+
 WebstoreInstaller::Approval::Approval()
     : profile(NULL),
       use_app_installed_bubble(false),
@@ -358,3 +358,5 @@ void WebstoreInstaller::ReportSuccess() {
 
   Release();  // Balanced in Start().
 }
+
+}  // namespace extensions