Cleanup: Move kChromeDevToolsScheme constant into content namespace.

content/public/common/url_constants.cc

Index: content/public/common/url_constants.cc
diff --git a/content/public/common/url_constants.cc b/content/public/common/url_constants.cc
index fe58b0d3891160faa182cf93759494eb2a86e856..fe43e3c2d0241e9e9a07f4e02534633ecc705190 100644
--- a/content/public/common/url_constants.cc
+++ b/content/public/common/url_constants.cc
@@ -9,13 +9,13 @@ namespace chrome {
 const char kAboutScheme[] = "about";
 const char kBlobScheme[] = "blob";
 
-// Before adding new chrome schemes please check with security@chromium.org.
-// There are security implications associated with introducing new schemes.
-const char kChromeDevToolsScheme[] = "chrome-devtools";
 }  // namespace chrome
 
 namespace content {
 
+// Before adding new chrome schemes please check with security@chromium.org.
+// There are security implications associated with introducing new schemes.
+const char kChromeDevToolsScheme[] = "chrome-devtools";
 const char kChromeUIScheme[] = "chrome";
 const char kDataScheme[] = "data";
 const char kFileScheme[] = "file";