Currently microtasks execution falls into the "other" category. It should be Scripting instead.
The v8 part is landed https://chromium.googlesource.com/v8/v8/+/607c2c329360f1c316994015fa6a4466f6595797
The following revision refers to this bug: https://chromium.googlesource.com/chromium/src.git/+/b0a1867f5afec2d8b8e456116613ee294f5e1c42 commit b0a1867f5afec2d8b8e456116613ee294f5e1c42 Author: alph <alph@chromium.org> Date: Thu Sep 01 21:38:22 2016 DevTools: Introduce RunMicrotasks event. The event belongs to the Scripting category. It enables JS sample events being displayed when they fall into RunMicrotasks event. BUG= 642228 Review-Url: https://codereview.chromium.org/2282403006 Cr-Commit-Position: refs/heads/master@{#416065} [add] https://crrev.com/b0a1867f5afec2d8b8e456116613ee294f5e1c42/third_party/WebKit/LayoutTests/inspector/tracing/timeline-js/timeline-microtasks-expected.txt [add] https://crrev.com/b0a1867f5afec2d8b8e456116613ee294f5e1c42/third_party/WebKit/LayoutTests/inspector/tracing/timeline-js/timeline-microtasks.html [modify] https://crrev.com/b0a1867f5afec2d8b8e456116613ee294f5e1c42/third_party/WebKit/LayoutTests/inspector/tracing/timeline-misc/timeline-receive-response-event-expected.txt [modify] https://crrev.com/b0a1867f5afec2d8b8e456116613ee294f5e1c42/third_party/WebKit/Source/devtools/front_end/timeline/TimelineController.js [modify] https://crrev.com/b0a1867f5afec2d8b8e456116613ee294f5e1c42/third_party/WebKit/Source/devtools/front_end/timeline/TimelineUIUtils.js [modify] https://crrev.com/b0a1867f5afec2d8b8e456116613ee294f5e1c42/third_party/WebKit/Source/devtools/front_end/timeline_model/TimelineJSProfile.js [modify] https://crrev.com/b0a1867f5afec2d8b8e456116613ee294f5e1c42/third_party/WebKit/Source/devtools/front_end/timeline_model/TimelineModel.js
The following revision refers to this bug: https://chromium.googlesource.com/chromium/src.git/+/3ca795eba291a30486050b1732b412ed56ced633 commit 3ca795eba291a30486050b1732b412ed56ced633 Author: alph <alph@chromium.org> Date: Tue Sep 13 17:26:44 2016 DevTools: Do not include RunMicrotasks event into FunctionCall. It's not needed to enclose MicrotasksScope into FunctionCall trace event as microtasks now have a dedicated event. BUG= 642228 Review-Url: https://codereview.chromium.org/2331363002 Cr-Commit-Position: refs/heads/master@{#418283} [modify] https://crrev.com/3ca795eba291a30486050b1732b412ed56ced633/third_party/WebKit/LayoutTests/inspector/tracing/timeline-misc/timeline-receive-response-event-expected.txt [modify] https://crrev.com/3ca795eba291a30486050b1732b412ed56ced633/third_party/WebKit/Source/bindings/core/v8/V8ScriptRunner.cpp
Comment 1 by alph@chromium.org
, Sep 1 2016