Move GetWebstoreLaunchURL and GetWebstoreItemDetailURLPrefix to extensions/common/extension_urls.h.

chrome/browser/extensions/webstore_standalone_installer.cc

Index: chrome/browser/extensions/webstore_standalone_installer.cc
diff --git a/chrome/browser/extensions/webstore_standalone_installer.cc b/chrome/browser/extensions/webstore_standalone_installer.cc
index 9f13c3cc5cec2d5c44d4bbbb24af36f67584554e..e72d61ee9be6c9f2bc0c32cb34af8e7aeb098a93 100644
--- a/chrome/browser/extensions/webstore_standalone_installer.cc
+++ b/chrome/browser/extensions/webstore_standalone_installer.cc
@@ -13,6 +13,7 @@
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/extensions/extension.h"
 #include "content/public/browser/web_contents.h"
+#include "extensions/common/extension_urls.h"
 #include "url/gurl.h"
 
 using content::WebContents;
@@ -144,8 +145,7 @@ void WebstoreStandaloneInstaller::OnWebstoreResponseParseSuccess(
       CompleteInstall(kInvalidWebstoreResponseError);
       return;
     }
-    icon_url = GURL(extension_urls::GetWebstoreLaunchURL()).Resolve(
-        icon_url_string);
+    icon_url = GURL(GetWebstoreLaunchURL()).Resolve(icon_url_string);
     if (!icon_url.is_valid()) {
       CompleteInstall(kInvalidWebstoreResponseError);
       return;