Add a flag to override unlimitedStorage quota for any origins.

chrome/browser/extensions/extension_special_storage_policy.cc

Index: chrome/browser/extensions/extension_special_storage_policy.cc
diff --git a/chrome/browser/extensions/extension_special_storage_policy.cc b/chrome/browser/extensions/extension_special_storage_policy.cc
index e23964185b098be1c800ebbaf6137a4bcfe862fa..12ab123ee5f2753619d3a5452ab7ea6f69ad5912 100644
--- a/chrome/browser/extensions/extension_special_storage_policy.cc
+++ b/chrome/browser/extensions/extension_special_storage_policy.cc
@@ -5,6 +5,7 @@
 #include "chrome/browser/extensions/extension_special_storage_policy.h"
 
 #include "base/bind.h"
+#include "base/command_line.h"
 #include "base/logging.h"
 #include "base/stl_util.h"
 #include "base/utf_string_conversions.h"
@@ -14,6 +15,7 @@
 #include "chrome/common/extensions/extension.h"
 #include "chrome/common/url_constants.h"
 #include "content/public/browser/browser_thread.h"
+#include "content/public/common/content_switches.h"
 #include "extensions/common/constants.h"
 
 using content::BrowserThread;
@@ -33,6 +35,9 @@ bool ExtensionSpecialStoragePolicy::IsStorageProtected(const GURL& origin) {
 }
 
 bool ExtensionSpecialStoragePolicy::IsStorageUnlimited(const GURL& origin) {
+  if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kUnlimitedStorage))
+    return true;
+
   base::AutoLock locker(lock_);
   return unlimited_extensions_.Contains(origin);
 }