VR: Poll media access flags

chrome/browser/android/vr_shell/vr_shell.cc

Index: chrome/browser/android/vr_shell/vr_shell.cc
diff --git a/chrome/browser/android/vr_shell/vr_shell.cc b/chrome/browser/android/vr_shell/vr_shell.cc
index 1917ddbef19bccb8195c63e9dc0a1d1bd400e840..a9db12820d9c340e0cd25b0a1d9ec8db149b5ecf 100644
--- a/chrome/browser/android/vr_shell/vr_shell.cc
+++ b/chrome/browser/android/vr_shell/vr_shell.cc
@@ -30,6 +30,8 @@
 #include "chrome/browser/android/vr_shell/vr_shell_gl.h"
 #include "chrome/browser/android/vr_shell/vr_usage_monitor.h"
 #include "chrome/browser/android/vr_shell/vr_web_contents_observer.h"
+#include "chrome/browser/media/webrtc/media_capture_devices_dispatcher.h"
+#include "chrome/browser/media/webrtc/media_stream_capture_indicator.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/navigation_controller.h"
 #include "content/public/browser/render_view_host.h"
@@ -61,6 +63,9 @@ namespace vr_shell {
 namespace {
 vr_shell::VrShell* g_instance;
 
+constexpr base::TimeDelta poll_media_access_interval_ =
+    base::TimeDelta::FromSecondsD(0.01);
+
 void SetIsInVR(content::WebContents* contents, bool is_in_vr) {
   if (contents && contents->GetRenderWidgetHostView())
     contents->GetRenderWidgetHostView()->SetIsInVR(is_in_vr);
@@ -512,11 +517,46 @@ void VrShell::OnVRVsyncProviderRequest(
 
 void VrShell::UpdateVSyncInterval(int64_t timebase_nanos,
                                   double interval_seconds) {
+  PollMediaAccessFlag();
   PostToGlThreadWhenReady(base::Bind(&VrShellGl::UpdateVSyncInterval,
                                      gl_thread_->GetVrShellGl(), timebase_nanos,
                                      interval_seconds));
 }
 
+void VrShell::PollMediaAccessFlag() {
+  poll_capturing_media_task_.Cancel();
+
+  poll_capturing_media_task_.Reset(base::Bind(&VrShell::PollMediaAccessFlag,
+                                              weak_ptr_factory_.GetWeakPtr()));

[mthiesse, 2017/05/12 22:43:59]

No need for weakptr, just cancel the callback in the destructor.

[asimjour1, 2017/05/12 22:57:04]

Done.

+  main_thread_task_runner_->PostDelayedTask(
+      FROM_HERE, poll_capturing_media_task_.callback(),
+      poll_media_access_interval_);
+
+  scoped_refptr<MediaStreamCaptureIndicator> indicator =
+      MediaCaptureDevicesDispatcher::GetInstance()
+          ->GetMediaStreamCaptureIndicator();
+  bool is_capturing_audio = indicator->IsCapturingAudio(web_contents_);
+  if (is_capturing_audio != is_capturing_audio_)
+    PostToGlThreadWhenReady(base::Bind(&VrShellGl::SetAudioCapturingWarning,
+                                       gl_thread_->GetVrShellGl(),
+                                       is_capturing_audio));
+  is_capturing_audio_ = is_capturing_audio;
+
+  bool is_capturing_video = indicator->IsCapturingVideo(web_contents_);
+  if (is_capturing_video != is_capturing_video_)
+    PostToGlThreadWhenReady(base::Bind(&VrShellGl::SetVideoCapturingWarning,
+                                       gl_thread_->GetVrShellGl(),
+                                       is_capturing_video));
+  is_capturing_video_ = is_capturing_video;
+
+  bool is_capturing_screen = indicator->IsBeingMirrored(web_contents_);
+  if (is_capturing_screen != is_capturing_screen_)
+    PostToGlThreadWhenReady(base::Bind(&VrShellGl::SetScreenCapturingWarning,
+                                       gl_thread_->GetVrShellGl(),
+                                       is_capturing_screen));
+  is_capturing_screen_ = is_capturing_screen;
+}
+
 void VrShell::SetContentCssSize(float width, float height, float dpr) {
   JNIEnv* env = base::android::AttachCurrentThread();
   Java_VrShellImpl_setContentCssSize(env, j_vr_shell_.obj(), width, height,