electron/patches/chromium/dom_storage_limits.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Jacob Quant <jacobq@gmail.com>
Date: Thu, 31 Oct 2019 14:00:00 -0500
Subject: dom_storage_limits.patch

This patch increases the DOM storage (e.g. `localStorage`
and `sessionStorage`) size quota from 10MiB to 100MiB.
Previous versions of this patch attempted to circumvent
the restriction altogether.
However, this can lead to other problems, such as crashing
the Dev Tools when attempting to read or write values that exceed
`IPC::Channel::kMaximumMessageSize` (128MiB).

Increasing the quota rather than bypassing it reduces the
amount of chromium code that needs to be changed for Electron
as well as keeps these storage areas limited to a bounded
size meanwhile giving application developers more space to work with.

diff --git a/components/services/storage/dom_storage/dom_storage_constants.cc b/components/services/storage/dom_storage/dom_storage_constants.cc
index aa5edd1d07d97bee4912b14996ff804351240e94..8334b7eb6a3293c068f5234508f8dca780ccb262 100644
--- a/components/services/storage/dom_storage/dom_storage_constants.cc
+++ b/components/services/storage/dom_storage/dom_storage_constants.cc
@@ -6,7 +6,9 @@
 
 namespace storage {
 
-const size_t kPerStorageAreaQuota = 10 * 1024 * 1024;
+// Electron's dom_storage_limits.patch increased this value from 10MiB to 100MiB
+const size_t kPerStorageAreaQuota = 100 * 1024 * 1024;
+
 const size_t kPerStorageAreaOverQuotaAllowance = 100 * 1024;
 
 }  // namespace storage
diff --git a/third_party/blink/public/mojom/dom_storage/storage_area.mojom b/third_party/blink/public/mojom/dom_storage/storage_area.mojom
index 5902d8217c1b98d182f68f4199be4830c6177e68..2517c37be979cfe25ec8592cdbf8e53bab100c42 100644
--- a/third_party/blink/public/mojom/dom_storage/storage_area.mojom
+++ b/third_party/blink/public/mojom/dom_storage/storage_area.mojom
@@ -50,7 +50,8 @@ struct KeyValue {
 interface StorageArea {
   // The quota for each storage area.
   // This value is enforced in renderer processes and the browser process.
-  const uint32 kPerStorageAreaQuota = 10485760; // 10 MiB
+  // Electron's dom_storage_limits.patch increased this value from 10MiB to 100MiB
+  const uint32 kPerStorageAreaQuota = 104857600; // 100 MiB
 
   // In the browser process we allow some overage to
   // accommodate concurrent writes from different renderers