From bcb4b56b8255f06a976ec78bd9b61693197e0448 Mon Sep 17 00:00:00 2001
From: Alvaro Velad <alvaro.velad@mirada.tv>
Date: Tue, 15 Dec 2020 12:39:27 +0100
Subject: [PATCH 1/4] Add navigator.storage.estimate polyfill

---
 build/types/polyfill             |  1 +
 lib/polyfill/storage_estimate.js | 54 ++++++++++++++++++++++++++++++++
 2 files changed, 55 insertions(+)
 create mode 100644 lib/polyfill/storage_estimate.js

diff --git a/build/types/polyfill b/build/types/polyfill
index 312fed509b..1476a2cdd0 100644
--- a/build/types/polyfill
+++ b/build/types/polyfill
@@ -13,6 +13,7 @@
 +../../lib/polyfill/patchedmediakeys_nop.js
 +../../lib/polyfill/patchedmediakeys_webkit.js
 +../../lib/polyfill/pip_webkit.js
++../../lib/polyfill/storage_estimate.js
 +../../lib/polyfill/video_play_promise.js
 +../../lib/polyfill/videoplaybackquality.js
 +../../lib/polyfill/vttcue.js
diff --git a/lib/polyfill/storage_estimate.js b/lib/polyfill/storage_estimate.js
new file mode 100644
index 0000000000..4252ca3fc3
--- /dev/null
+++ b/lib/polyfill/storage_estimate.js
@@ -0,0 +1,54 @@
+/*! @license
+ * Shaka Player
+ * Copyright 2016 Google LLC
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+goog.provide('shaka.polyfill.StorageEstimate');
+
+goog.require('shaka.polyfill');
+
+
+/**
+ * @summary A polyfill to provide navigator.storage.estimate in old
+ * webkit browsers.
+ */
+shaka.polyfill.StorageEstimate = class {
+  /**
+   * Install the polyfill if needed.
+   */
+  static install() {
+    if ('storage' in navigator && 'estimate' in navigator.storage) {
+      // No need.
+      return;
+    }
+
+    if ('webkitTemporaryStorage' in navigator &&
+        'queryUsageAndQuota' in navigator.webkitTemporaryStorage) {
+      if (!('storage' in navigator)) {
+        navigator.storage = /** @type {StorageManager} */ {};
+      }
+      navigator.storage.estimate =
+        shaka.polyfill.StorageEstimate.storageEstimate_;
+    }
+  }
+
+  /**
+   * @this {StorageManager}
+   * @return {!Promise}
+   * @private
+   */
+  static storageEstimate_() {
+    return new Promise((resolve, reject) => {
+      navigator.webkitTemporaryStorage.queryUsageAndQuota(
+          (usage, quota) => {
+            resolve({usage: usage, quota: quota});
+          },
+          reject,
+      );
+    });
+  }
+};
+
+
+shaka.polyfill.register(shaka.polyfill.StorageEstimate.install);

From 3e764d661cd6283627a43ac04eafd47d4411ae2c Mon Sep 17 00:00:00 2001
From: Alvaro Velad <alvaro.velad@mirada.tv>
Date: Tue, 15 Dec 2020 20:02:03 +0100
Subject: [PATCH 2/4] Fix indent

---
 lib/polyfill/storage_estimate.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/polyfill/storage_estimate.js b/lib/polyfill/storage_estimate.js
index 4252ca3fc3..5cf636d1dc 100644
--- a/lib/polyfill/storage_estimate.js
+++ b/lib/polyfill/storage_estimate.js
@@ -29,7 +29,7 @@ shaka.polyfill.StorageEstimate = class {
         navigator.storage = /** @type {StorageManager} */ {};
       }
       navigator.storage.estimate =
-        shaka.polyfill.StorageEstimate.storageEstimate_;
+          shaka.polyfill.StorageEstimate.storageEstimate_;
     }
   }
 

From 92f5350dc3c5688997aaea3bc348bae58ad9369e Mon Sep 17 00:00:00 2001
From: Alvaro Velad <alvaro.velad@mirada.tv>
Date: Tue, 15 Dec 2020 20:02:19 +0100
Subject: [PATCH 3/4] Add link

---
 lib/polyfill/storage_estimate.js | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/polyfill/storage_estimate.js b/lib/polyfill/storage_estimate.js
index 5cf636d1dc..4436bb4781 100644
--- a/lib/polyfill/storage_estimate.js
+++ b/lib/polyfill/storage_estimate.js
@@ -12,6 +12,7 @@ goog.require('shaka.polyfill');
 /**
  * @summary A polyfill to provide navigator.storage.estimate in old
  * webkit browsers.
+ * See: https://developers.google.com/web/updates/2017/08/estimating-available-storage-space#the-present
  */
 shaka.polyfill.StorageEstimate = class {
   /**

From 9b09c1c55a90093a3b5be8649c95dc35e9405359 Mon Sep 17 00:00:00 2001
From: Alvaro Velad <alvaro.velad@mirada.tv>
Date: Tue, 15 Dec 2020 20:02:42 +0100
Subject: [PATCH 4/4] Use fields directly

---
 lib/polyfill/storage_estimate.js | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/lib/polyfill/storage_estimate.js b/lib/polyfill/storage_estimate.js
index 4436bb4781..1143ecc69b 100644
--- a/lib/polyfill/storage_estimate.js
+++ b/lib/polyfill/storage_estimate.js
@@ -19,15 +19,15 @@ shaka.polyfill.StorageEstimate = class {
    * Install the polyfill if needed.
    */
   static install() {
-    if ('storage' in navigator && 'estimate' in navigator.storage) {
+    if (navigator.storage && navigator.storage.estimate) {
       // No need.
       return;
     }
 
-    if ('webkitTemporaryStorage' in navigator &&
-        'queryUsageAndQuota' in navigator.webkitTemporaryStorage) {
+    if (navigator.webkitTemporaryStorage &&
+        navigator.webkitTemporaryStorage.queryUsageAndQuota) {
       if (!('storage' in navigator)) {
-        navigator.storage = /** @type {StorageManager} */ {};
+        navigator.storage = /** @type {!StorageManager} */ ({});
       }
       navigator.storage.estimate =
           shaka.polyfill.StorageEstimate.storageEstimate_;