Revert of Change how the quota system computes the total poolsize for temporary storage

chrome/browser/extensions/mock_extension_special_storage_policy.cc

Index: chrome/browser/extensions/mock_extension_special_storage_policy.cc
diff --git a/chrome/browser/extensions/mock_extension_special_storage_policy.cc b/chrome/browser/extensions/mock_extension_special_storage_policy.cc
index ca32e2d177d8fac315627020c9d38732afee9959..d4d609bf34216433727acdb3bf02ab926043bfc2 100644
--- a/chrome/browser/extensions/mock_extension_special_storage_policy.cc
+++ b/chrome/browser/extensions/mock_extension_special_storage_policy.cc
@@ -20,6 +20,10 @@ bool MockExtensionSpecialStoragePolicy::IsStorageSessionOnly(
   return false;
 }
 
+bool MockExtensionSpecialStoragePolicy::CanQueryDiskSize(const GURL& origin) {
+  return false;
+}
+
 bool MockExtensionSpecialStoragePolicy::HasSessionOnlyOrigins() {
   return false;
 }