Cleanup: Move kAboutScheme constant into content namespace.

chrome/browser/extensions/api/web_request/web_request_permissions.cc

Index: chrome/browser/extensions/api/web_request/web_request_permissions.cc
diff --git a/chrome/browser/extensions/api/web_request/web_request_permissions.cc b/chrome/browser/extensions/api/web_request/web_request_permissions.cc
index c8014d79abf4458feae79ac54be12786852b07d3..636db60be8d06dd21cfe3a551b7f7a1cbb8a1f85 100644
--- a/chrome/browser/extensions/api/web_request/web_request_permissions.cc
+++ b/chrome/browser/extensions/api/web_request/web_request_permissions.cc
@@ -68,7 +68,7 @@ bool IsSensitiveURL(const GURL& url) {
 // to. Extensions still need specific permissions for a given URL, which is
 // covered by CanExtensionAccessURL.
 bool HasWebRequestScheme(const GURL& url) {
-  return (url.SchemeIs(chrome::kAboutScheme) ||
+  return (url.SchemeIs(content::kAboutScheme) ||
           url.SchemeIs(content::kFileScheme) ||
           url.SchemeIs(content::kFileSystemScheme) ||
           url.SchemeIs(content::kFtpScheme) ||
@@ -132,7 +132,7 @@ bool WebRequestPermissions::CanExtensionAccessURL(
     case REQUIRE_HOST_PERMISSION:
       // about: URLs are not covered in host permissions, but are allowed
       // anyway.
-      if (!((url.SchemeIs(chrome::kAboutScheme) ||
+      if (!((url.SchemeIs(content::kAboutScheme) ||
              extensions::PermissionsData::HasHostPermission(extension, url) ||
              url.GetOrigin() == extension->url()))) {
         return false;