Enable granular control of autoplay

app/brave_generated_resources.grd

@@ -113,6 +113,28 @@ By installing this extension, you are agreeing to the Google Widevine Terms of U
       <message name="IDS_BOOKMARK_GROUP_FROM_BRAVE" desc="The group name of bookmarks from Brave">
         Imported From Brave
       </message>
+      <!-- Autoplay -->
+      <message name="IDS_AUTOPLAY_PERMISSION_FRAGMENT" desc="Permission request shown if the user is visiting a site that wants to autoplay media. Follows a prompt: 'This site would like to:'">
+        Autoplay media
+      </message>
+      <message name="IDS_SETTINGS_SITE_SETTINGS_AUTOPLAY" desc="Label for autoplay site settings.">
+        Autoplay
+      </message>
+      <message name="IDS_SETTINGS_SITE_SETTINGS_AUTOPLAY_ASK" desc="The ask label for autoplay in site settings.">
+        Ask when a site wants to autoplay media
+      </message>
+      <message name="IDS_SETTINGS_SITE_SETTINGS_AUTOPLAY_ASK_RECOMMENDED" desc="The ask label for autoplay in site settings (with the 'recommended' suffix).">
+        Ask when a site wants to autoplay media (recommended)
+      </message>
+      <message name="IDS_BLOCKED_AUTOPLAY_TITLE" desc="Tooltip and bubble info header text when a page is not allowed to autoplay media.">
+        Autoplay was blocked on this page
+      </message>
+      <message name="IDS_BLOCKED_AUTOPLAY_UNBLOCK" desc="Radio button choice to unblock a site from autoplay media, displayed in bubble when a page tries to autoplay media.">
+        Always allow autoplay on <ph name="HOST">$1<ex>mail.google.com</ex></ph>
+      </message>
+      <message name="IDS_BLOCKED_AUTOPLAY_NO_ACTION" desc="Radio button choice to continue blocking a site from autoplay media, displayed in bubble when a page tries to autoplay media.">
+        Continue blocking autoplay
+      </message>
     </messages>
     <includes>
       <include name="IDR_BRAVE_TAG_SERVICES_POLYFILL" file="resources/js/tag_services_polyfill.js" type="BINDATA" />

browser/BUILD.gn

@@ -100,9 +100,11 @@ source_set("browser") {
   ]
 
   deps = [
+    "autoplay",
     "//brave/components/brave_shields/browser:brave_shields",
     "extensions",
     "net",
+    "permissions",
   ]
 
   if (is_mac) {

browser/autoplay/BUILD.gn

@@ -0,0 +1,12 @@
+import("//build/config/features.gni")
+
+source_set("autoplay") {
+  sources = [
+    "autoplay_permission_context.cc",
+    "autoplay_permission_context.h",
+  ]
+
+  deps = [
+    "//chrome/browser",
+  ]
+}

browser/autoplay/autoplay_permission_context.cc

@@ -0,0 +1,58 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "brave/browser/autoplay/autoplay_permission_context.h"
+
+#include "chrome/browser/content_settings/tab_specific_content_settings.h"
+#include "chrome/browser/permissions/permission_request_id.h"
+#include "chrome/common/chrome_features.h"
+#include "components/content_settings/core/common/content_settings_types.h"
+#include "third_party/blink/public/mojom/feature_policy/feature_policy.mojom.h"
+
+AutoplayPermissionContext::AutoplayPermissionContext(Profile* profile)
+    : PermissionContextBase(
+          profile,
+          CONTENT_SETTINGS_TYPE_AUTOPLAY,
+          blink::mojom::FeaturePolicyFeature::kAutoplay) {}
+
+AutoplayPermissionContext::~AutoplayPermissionContext() = default;
+
+void AutoplayPermissionContext::UpdateTabContext(
+    const PermissionRequestID& id,
+    const GURL& requesting_frame,
+    bool allowed) {
+  TabSpecificContentSettings* content_settings =
+      TabSpecificContentSettings::GetForFrame(id.render_process_id(),
+                                              id.render_frame_id());
+  if (!content_settings)
+    return;
+
+  if (!allowed) {
+    content_settings->OnContentBlocked(CONTENT_SETTINGS_TYPE_AUTOPLAY);
+  }
+}
+
+void AutoplayPermissionContext::NotifyPermissionSet(
+    const PermissionRequestID& id,
+    const GURL& requesting_origin,
+    const GURL& embedding_origin,
+    const BrowserPermissionCallback& callback,
+    bool persist,
+    ContentSetting content_setting) {
+  PermissionContextBase::NotifyPermissionSet(id, requesting_origin,
+                                             embedding_origin, callback,
+                                             persist, content_setting);
+  // Ask -> Allow
+  if (persist && content_setting == CONTENT_SETTING_ALLOW) {
+    content::WebContents* web_contents =
+      content::WebContents::FromRenderFrameHost(
+        content::RenderFrameHost::FromID(id.render_process_id(),
+                                         id.render_frame_id()));
+     web_contents->GetController().Reload(content::ReloadType::NORMAL, false);
+  }
+}
+
+bool AutoplayPermissionContext::IsRestrictedToSecureOrigins() const {
+  return false;
+}

browser/autoplay/autoplay_permission_context.h

@@ -0,0 +1,32 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef BRAVE_BROWSER_AUTOPLAY_AUTOPLAY_PERMISSION_CONTEXT_H_
+#define BRAVE_BROWSER_AUTOPLAY_AUTOPLAY_PERMISSION_CONTEXT_H_
+
+#include "base/macros.h"
+#include "chrome/browser/permissions/permission_context_base.h"
+
+class AutoplayPermissionContext : public PermissionContextBase {
+ public:
+  explicit AutoplayPermissionContext(Profile* profile);
+  ~AutoplayPermissionContext() override;
+
+ private:
+  // PermissionContextBase:
+  void UpdateTabContext(const PermissionRequestID& id,
+                        const GURL& requesting_frame,
+                        bool allowed) override;
+  void NotifyPermissionSet(const PermissionRequestID& id,
+                           const GURL& requesting_origin,
+                           const GURL& embedding_origin,
+                           const BrowserPermissionCallback& callback,
+                           bool persist,
+                           ContentSetting content_setting) override;
+  bool IsRestrictedToSecureOrigins() const override;
+
+  DISALLOW_COPY_AND_ASSIGN(AutoplayPermissionContext);
+};
+
+#endif  // BRAVE_BROWSER_AUTOPLAY_AUTOPLAY_PERMISSION_CONTEXT_H_