Move some content url constants to /url.

chrome/browser/ui/cocoa/drag_util.mm

Index: chrome/browser/ui/cocoa/drag_util.mm
diff --git a/chrome/browser/ui/cocoa/drag_util.mm b/chrome/browser/ui/cocoa/drag_util.mm
index 7dff7930317262ccc61015c5fdbd1689f5963dd0..d1dfd37db1d302d4b62d6683e0b783a97e90b645 100644
--- a/chrome/browser/ui/cocoa/drag_util.mm
+++ b/chrome/browser/ui/cocoa/drag_util.mm
@@ -7,7 +7,6 @@
 #include "base/files/file_path.h"
 #include "chrome/browser/profiles/profile.h"
 #include "content/public/browser/plugin_service.h"
-#include "content/public/common/url_constants.h"
 #include "content/public/common/webplugininfo.h"
 #include "ipc/ipc_message.h"
 #include "net/base/filename_util.h"
@@ -15,6 +14,7 @@
 #import "third_party/mozilla/NSPasteboard+Utils.h"
 #import "ui/base/dragdrop/cocoa_dnd_util.h"
 #include "url/gurl.h"
+#include "url/url_constants.h"
 
 using content::PluginService;
 
@@ -58,7 +58,7 @@ GURL GetFileURLFromDropData(id<NSDraggingInfo> info) {
                                           [info draggingPasteboard],
                                           YES);
 
-    if (url.SchemeIs(content::kFileScheme))
+    if (url.SchemeIs(url::kFileScheme))
       return url;
   }
   return GURL();