Cancel MIDI permission request infobar on MIDIAccess stop.

chrome/browser/media/chrome_midi_permission_context.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/media/chrome_midi_permission_context.h"
 
 #include "base/prefs/pref_service.h"
 #include "chrome/browser/content_settings/host_content_settings_map.h"
 #include "chrome/browser/content_settings/permission_queue_controller.h"
 #include "chrome/browser/content_settings/permission_request_id.h"
 #include "chrome/browser/content_settings/tab_specific_content_settings.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/tab_contents/tab_util.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/web_contents.h"
 
 ChromeMIDIPermissionContext::ChromeMIDIPermissionContext(Profile* profile)
     : profile_(profile),
       shutting_down_(false) {
   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
 }
 
 ChromeMIDIPermissionContext::~ChromeMIDIPermissionContext() {
   DCHECK(!permission_queue_controller_);
   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
 }
 
-void ChromeMIDIPermissionContext::Shutdown() {
+void ChromeMIDIPermissionContext::ShutdownOnUIThread() {
   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
   permission_queue_controller_.reset();
   shutting_down_ = true;
 }
 
 void ChromeMIDIPermissionContext::RequestMIDISysExPermission(
     int render_process_id,
     int render_view_id,
+    int bridge_id,
     const GURL& requesting_frame,
-    const content::BrowserContext::MIDISysExPermissionCallback& callback) {
+    const content::MIDISysExPermissionCallback& callback) {
   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
   DCHECK(!shutting_down_);
 
   // TODO(toyoshim): Support Extension's manifest declared permission.
   // http://crbug.com/266338 .
 
   content::WebContents* web_contents =
     tab_util::GetWebContentsByID(render_process_id, render_view_id);
 
   // The page doesn't exist any more.
   if (!web_contents)
     return;
 
-  const PermissionRequestID id(render_process_id, render_view_id, 0);
+  const PermissionRequestID id(render_process_id, render_view_id, bridge_id);
 
   GURL embedder = web_contents->GetURL();
   if (!requesting_frame.is_valid() || !embedder.is_valid()) {
     LOG(WARNING) << "Attempt to use MIDI sysex from an invalid URL: "
                  << requesting_frame << "," << embedder
                  << " (Web MIDI is not supported in popups)";
     PermissionDecided(id, requesting_frame, embedder, callback, false);
     return;
   }
 
   DecidePermission(id, requesting_frame, embedder, callback);
 }
 
+void ChromeMIDIPermissionContext::CancelMIDISysExPermissionRequest(
+    int render_process_id,
+    int render_view_id,
+    int bridge_id,
+    const GURL& requesting_frame) {
+  CancelPendingInfoBarRequest(PermissionRequestID(
+      render_process_id, render_view_id, bridge_id));
+}
+
 void ChromeMIDIPermissionContext::DecidePermission(
     const PermissionRequestID& id,
     const GURL& requesting_frame,
     const GURL& embedder,
-    const content::BrowserContext::MIDISysExPermissionCallback& callback) {
+    const content::MIDISysExPermissionCallback& callback) {
   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
 
   ContentSetting content_setting =
       profile_->GetHostContentSettingsMap()->GetContentSetting(
           requesting_frame,
           embedder,
           CONTENT_SETTINGS_TYPE_MIDI_SYSEX,
           std::string());
   switch (content_setting) {
     case CONTENT_SETTING_BLOCK:
       PermissionDecided(id, requesting_frame, embedder, callback, false);
       break;
     case CONTENT_SETTING_ALLOW:
       PermissionDecided(id, requesting_frame, embedder, callback, true);
       break;
     default:
       GetQueueController()->CreateInfoBarRequest(
           id, requesting_frame, embedder, base::Bind(
               &ChromeMIDIPermissionContext::NotifyPermissionSet,
               base::Unretained(this), id, requesting_frame, callback));
   }
 }
 
 void ChromeMIDIPermissionContext::PermissionDecided(
     const PermissionRequestID& id,
     const GURL& requesting_frame,
     const GURL& embedder,
-    const content::BrowserContext::MIDISysExPermissionCallback& callback,
+    const content::MIDISysExPermissionCallback& callback,
     bool allowed) {
   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
   NotifyPermissionSet(id, requesting_frame, callback, allowed);
 }
 
 void ChromeMIDIPermissionContext::NotifyPermissionSet(
     const PermissionRequestID& id,
     const GURL& requesting_frame,
-    const content::BrowserContext::MIDISysExPermissionCallback& callback,
+    const content::MIDISysExPermissionCallback& callback,
     bool allowed) {
   DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
 
   TabSpecificContentSettings* content_settings =
       TabSpecificContentSettings::Get(id.render_process_id(),
                                       id.render_view_id());
   if (content_settings) {
     if (allowed)
       content_settings->OnMIDISysExAccessed(requesting_frame);
     else
       content_settings->OnMIDISysExAccessBlocked(requesting_frame);
   }
 
   callback.Run(allowed);
 }
 
 PermissionQueueController* ChromeMIDIPermissionContext::GetQueueController() {
   if (!permission_queue_controller_) {
     permission_queue_controller_.reset(
         new PermissionQueueController(profile_,
                                       CONTENT_SETTINGS_TYPE_MIDI_SYSEX));
   }
   return permission_queue_controller_.get();
 }
+
+void ChromeMIDIPermissionContext::CancelPendingInfoBarRequest(
+    const PermissionRequestID& id) {
+  if (!content::BrowserThread::CurrentlyOn(content::BrowserThread::UI)) {
+    content::BrowserThread::PostTask(
+        content::BrowserThread::UI, FROM_HERE,
+        base::Bind(
+            &ChromeMIDIPermissionContext::CancelPendingInfoBarRequest,
+            this, id));
+     return;
+  }
+  DCHECK(content::BrowserThread::CurrentlyOn(content::BrowserThread::UI));
+  if (shutting_down_)
+    return;
+  GetQueueController()->CancelInfoBarRequest(id);
+}