https://w3c.github.io/hr-time/#the-performance-interface JSON.stringify(performance) does something useful (?) in Edge and Firefox, but returns '{}' in Chrome and Safari.
Found via https://docs.google.com/spreadsheets/d/1Fqv1JyadCDGMJ91GdIYPQicI97ELIHabwUfxFQv-jLU/edit#gid=0
The following revision refers to this bug: https://chromium.googlesource.com/chromium/src.git/+/fb6c988e174e59fed729751deabe71fbb470b1a3 commit fb6c988e174e59fed729751deabe71fbb470b1a3 Author: martijn <martijn@martijnc.be> Date: Wed Oct 19 17:20:38 2016 Add serializers for - window.performance - window.performance.navigation - window.performance.memory BUG= 651797 Review-Url: https://chromiumcodereview.appspot.com/2422913002 Cr-Commit-Position: refs/heads/master@{#426231} [modify] https://crrev.com/fb6c988e174e59fed729751deabe71fbb470b1a3/third_party/WebKit/LayoutTests/fast/dom/Window/window-properties-performance-expected.txt [modify] https://crrev.com/fb6c988e174e59fed729751deabe71fbb470b1a3/third_party/WebKit/LayoutTests/fast/dom/Window/window-properties-performance.html [modify] https://crrev.com/fb6c988e174e59fed729751deabe71fbb470b1a3/third_party/WebKit/LayoutTests/virtual/stable/webexposed/global-interface-listing-expected.txt [modify] https://crrev.com/fb6c988e174e59fed729751deabe71fbb470b1a3/third_party/WebKit/LayoutTests/webexposed/global-interface-listing-expected.txt [modify] https://crrev.com/fb6c988e174e59fed729751deabe71fbb470b1a3/third_party/WebKit/Source/core/timing/Performance.cpp [modify] https://crrev.com/fb6c988e174e59fed729751deabe71fbb470b1a3/third_party/WebKit/Source/core/timing/Performance.h [modify] https://crrev.com/fb6c988e174e59fed729751deabe71fbb470b1a3/third_party/WebKit/Source/core/timing/Performance.idl [modify] https://crrev.com/fb6c988e174e59fed729751deabe71fbb470b1a3/third_party/WebKit/Source/core/timing/PerformanceNavigation.cpp [modify] https://crrev.com/fb6c988e174e59fed729751deabe71fbb470b1a3/third_party/WebKit/Source/core/timing/PerformanceNavigation.h [modify] https://crrev.com/fb6c988e174e59fed729751deabe71fbb470b1a3/third_party/WebKit/Source/core/timing/PerformanceNavigation.idl
Fixed by martijn@martijnc.be
Comment 1 by foolip@chromium.org
, Sep 30 2016