make IPC calls to get pickle key

src/vector/platform/ElectronPlatform.tsx

@@ -500,4 +500,30 @@ export default class ElectronPlatform extends VectorBasePlatform {
 
         return handled;
     }
+
+    async getPickleKey(userId: string, deviceId: string): Promise<string | null> {
+        try {
+            return await this._ipcCall('getPickleKey', userId, deviceId);
+        } catch (e) {
+            // if we can't connect to the password storage, assume there's no
+            // pickle key
+            return null;
+        }
+    }
+
+    async createPickleKey(userId: string, deviceId: string): Promise<string | null> {
+        try {
+            return await this._ipcCall('createPickleKey', userId, deviceId);
+        } catch (e) {
+            // if we can't connect to the password storage, assume there's no
+            // pickle key
+            return null;
+        }
+    }
+
+    async destroyPickleKey(userId: string, deviceId: string): Promise<void> {
+        try {
+            await this._ipcCall('destroyPickleKey', userId, deviceId);
+        } catch (e) {}
+    }
 }