Content Verification: Don't access UI-thread objects on the IO thread

chrome/browser/extensions/user_script_master.cc

Index: chrome/browser/extensions/user_script_master.cc
diff --git a/chrome/browser/extensions/user_script_master.cc b/chrome/browser/extensions/user_script_master.cc
index e5ac73b908225251607a0454f9aca8bc98291f6e..a3e58465001a36a1748ba245f3d8adb4c3e725f5 100644
--- a/chrome/browser/extensions/user_script_master.cc
+++ b/chrome/browser/extensions/user_script_master.cc
@@ -44,6 +44,7 @@ void VerifyContent(scoped_refptr<ContentVerifier> verifier,
                    const base::FilePath& extension_root,
                    const base::FilePath& relative_path,
                    const std::string& content) {
+  DCHECK_CURRENTLY_ON(content::BrowserThread::IO);
   scoped_refptr<ContentVerifyJob> job(
       verifier->CreateJobFor(extension_id, extension_root, relative_path));
   if (job.get()) {
@@ -81,11 +82,14 @@ bool LoadScriptContent(const std::string& extension_id,
       return false;
     }
     if (verifier) {
-      VerifyContent(verifier,
-                    extension_id,
-                    script_file->extension_root(),
-                    script_file->relative_path(),
-                    content);
+      content::BrowserThread::PostTask(content::BrowserThread::IO,
+                                       FROM_HERE,
+                                       base::Bind(&VerifyContent,
+                                                  verifier,
+                                                  extension_id,
+                                                  script_file->extension_root(),
+                                                  script_file->relative_path(),
+                                                  content));
     }
   }