Revert of WebVR: fix focus while presenting

third_party/WebKit/Source/modules/vr/VRDisplay.cpp

Index: third_party/WebKit/Source/modules/vr/VRDisplay.cpp
diff --git a/third_party/WebKit/Source/modules/vr/VRDisplay.cpp b/third_party/WebKit/Source/modules/vr/VRDisplay.cpp
index 55570f8f3b9e280804584310048828ea30b1305a..553622a0dfa064f16522cfd8694dc7834f1abb48 100644
--- a/third_party/WebKit/Source/modules/vr/VRDisplay.cpp
+++ b/third_party/WebKit/Source/modules/vr/VRDisplay.cpp
@@ -9,7 +9,6 @@
 #include "core/dom/FrameRequestCallback.h"
 #include "core/dom/ScriptedAnimationController.h"
 #include "core/dom/TaskRunnerHelper.h"
-#include "core/frame/Frame.h"
 #include "core/frame/FrameView.h"
 #include "core/frame/ImageBitmap.h"
 #include "core/frame/UseCounter.h"
@@ -105,36 +104,8 @@
   }
 }
 
-bool VRDisplay::IsPresentationFocused() {
-  if (!navigator_vr_)
-    return false;
-
-  if (navigator_vr_->IsFocused())
-    return true;
-
-  auto doc = navigator_vr_->GetDocument();
-  if (!doc)
-    return false;
-
-  // Check if this is an embedded iframe without focus. If a local parent is
-  // focused, continue presenting.
-
-  Frame* frame = doc->GetFrame();
-  for (; frame; frame = frame->Tree().Parent()) {
-    if (!frame->IsLocalFrame())
-      break;
-    auto frame_doc = ToLocalFrame(frame)->GetDocument();
-    if (frame_doc && frame_doc->hasFocus()) {
-      DVLOG(3) << __FUNCTION__ << ": a parent frame is focused";
-      return true;
-    }
-  }
-
-  return false;
-}
-
 bool VRDisplay::getFrameData(VRFrameData* frame_data) {
-  if (!IsPresentationFocused() || !frame_pose_ || display_blurred_)
+  if (!navigator_vr_->IsFocused() || !frame_pose_ || display_blurred_)
     return false;
 
   if (!frame_data)
@@ -776,11 +747,7 @@
 }
 
 void VRDisplay::ConnectVSyncProvider() {
-  DVLOG(1) << __FUNCTION__
-           << ": IsPresentationFocused()=" << IsPresentationFocused()
-           << " vr_v_sync_provider_.is_bound()="
-           << vr_v_sync_provider_.is_bound();
-  if (!IsPresentationFocused() || vr_v_sync_provider_.is_bound())
+  if (!navigator_vr_->IsFocused() || vr_v_sync_provider_.is_bound())
     return;
   display_->GetVRVSyncProvider(mojo::MakeRequest(&vr_v_sync_provider_));
   vr_v_sync_provider_.set_connection_error_handler(ConvertToBaseCallback(