Report if video capturing meets output protection requirement.

chrome/browser/chromeos/display/output_protection_delegate.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/chromeos/display/output_protection_delegate.h"
 
 #include "ash/shell.h"
 #include "ash/shell_delegate.h"
 #include "build/build_config.h"
 #include "chrome/browser/media/media_capture_devices_dispatcher.h"
@@ skipping 105 matching lines @@
                  weak_ptr_factory_.GetWeakPtr(), callback));
   desired_method_mask_ = desired_method_mask;
 }
 
 void OutputProtectionDelegate::QueryStatusComplete(
     const QueryStatusCallback& callback,
     const ui::DisplayConfigurator::QueryProtectionResponse& response) {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
 
   content::RenderFrameHost* rfh =
       content::RenderFrameHost::FromID(render_process_id_, render_frame_id_);

[oshima, 2016/05/07 14:41:49]

do you still need this?

[xhwang, 2016/05/09 18:29:48]

I don't really know when this could happen. But we have similar checks above in
QueryStatus() and below in OnWindowHierarchyChanged(). So I feel we should keep
this as is and investigate whether we need these in a separate CL.

[xjz, 2016/05/10 00:28:24]

It is not needed for this purpose. Added a TODO comment based on xhwang's
comment.

   if (!rfh) {
     LOG(WARNING) << "RenderFrameHost is not alive.";
     callback.Run(false, 0, 0);
     return;
   }
 
   uint32_t link_mask = response.link_mask;
   // If we successfully retrieved the device level status, check for capturers.
   if (response.success) {
-    const bool capture_detected =
-        // Check for tab capture on the current tab.
-        content::WebContents::FromRenderFrameHost(rfh)->GetCapturerCount() >
-            0 ||
-        // Check for desktop capture.
+    const bool insecure_capture_detected =
         MediaCaptureDevicesDispatcher::GetInstance()
-            ->IsDesktopCaptureInProgress();
-    if (capture_detected)
+            ->IsInsecureCapturingInProgress(render_process_id_,
+                                            render_frame_id_);
+    if (insecure_capture_detected)
       link_mask |= ui::DISPLAY_CONNECTION_TYPE_NETWORK;
   }
 
   callback.Run(response.success, link_mask, response.protection_mask);
 }
 
 void OutputProtectionDelegate::EnableProtectionComplete(
     const EnableProtectionCallback& callback,
     bool success) {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
@@ skipping 30 matching lines @@
   display_id_ = new_display_id;
 }
 
 void OutputProtectionDelegate::OnWindowDestroying(aura::Window* window) {
   DCHECK_EQ(window, window_);
   window_->RemoveObserver(this);
   window_ = nullptr;
 }
 
 }  // namespace chromeos