Check all settings when checking mic and camera access

content/public/browser/content_browser_client.h

 // Copyright (c) 2012 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.
 
 #ifndef CONTENT_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_
 #define CONTENT_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_
 
 #include <map>
 #include <string>
 #include <utility>
 #include <vector>
 
 #include "base/callback_forward.h"
 #include "base/memory/linked_ptr.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/scoped_vector.h"
 #include "base/values.h"
 #include "content/public/browser/certificate_request_result_type.h"
 #include "content/public/browser/desktop_notification_delegate.h"
 #include "content/public/common/content_client.h"
+#include "content/public/common/media_stream_request.h"
 #include "content/public/common/resource_type.h"
 #include "content/public/common/socket_permission_request.h"
 #include "content/public/common/window_container_type.h"
 #include "net/base/mime_util.h"
 #include "net/cookies/canonical_cookie.h"
 #include "net/url_request/url_request_interceptor.h"
 #include "net/url_request/url_request_job_factory.h"
 #include "third_party/WebKit/public/platform/WebNotificationPermission.h"
 #include "ui/base/window_open_disposition.h"
 #include "webkit/browser/fileapi/file_system_context.h"
@@ skipping 599 matching lines @@
   virtual void PreSpawnRenderer(sandbox::TargetPolicy* policy,
                                 bool* success) {}
 #endif
 
 #if defined(VIDEO_HOLE)
   // Allows an embedder to provide its own ExternalVideoSurfaceContainer
   // implementation.  Return NULL to disable external surface video.
   virtual ExternalVideoSurfaceContainer*
   OverrideCreateExternalVideoSurfaceContainer(WebContents* web_contents);
 #endif
+
+// Checks if |security_origin| has permission to access the microphone or
+// camera. Note that this does not query the user. |type| must be
+// MEDIA_DEVICE_AUDIO_CAPTURE or MEDIA_DEVICE_VIDEO_CAPTURE.
+virtual bool CheckMediaAccessPermission(BrowserContext* browser_context,

[jam, 2014/09/02 19:56:42]

this should be on BrowserContext, since it's a method that is per-BrowserContext

ContentBrowserClient is a last-resort when a callback from content has no other
delegate interface

+                                        const GURL& security_origin,
+                                        MediaStreamType type);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_CONTENT_BROWSER_CLIENT_H_