The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/59028394b71ed30f862465017f78db9de0f517f8

commit 59028394b71ed30f862465017f78db9de0f517f8
Author: Xida Chen <xidachen@chromium.org>
Date: Thu Jun 29 03:48:29 2017

Show PaintWorkletGlobalScope in dev-tool's console list

Currently, if we open a webpage that calls registerPaint API and open the
dev-tool, we would see "top" under the console list. The reason is that
when the MainThreadDebugger::ContextCreated is called, the
|human_readable_name| is set to an empty string.

This CL changes it such that when the InitializeContextIfNeeded is called
from PaintWorkletGlobalScope::Create, we pass a string to set the
|human_readable_name| when it is not the main world, and that string
will show up in the dev-tool's console list.

Bug:  728591 
Change-Id: I588d40c03d670331fdabee456411c34f75a7fb02
Reviewed-on: https://chromium-review.googlesource.com/543616
Commit-Queue: Xida Chen <xidachen@chromium.org>
Reviewed-by: Philip Rogers <pdr@chromium.org>
Reviewed-by: Andrey Kosyakov <caseq@chromium.org>
Reviewed-by: Jeremy Roman <jbroman@chromium.org>
Reviewed-by: Ian Kilpatrick <ikilpatrick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#483286}
[add] https://crrev.com/59028394b71ed30f862465017f78db9de0f517f8/third_party/WebKit/LayoutTests/inspector/console/paintworklet-console-selector-expected.txt
[add] https://crrev.com/59028394b71ed30f862465017f78db9de0f517f8/third_party/WebKit/LayoutTests/inspector/console/paintworklet-console-selector.html
[modify] https://crrev.com/59028394b71ed30f862465017f78db9de0f517f8/third_party/WebKit/Source/bindings/core/v8/ScriptController.cpp
[modify] https://crrev.com/59028394b71ed30f862465017f78db9de0f517f8/third_party/WebKit/Source/bindings/core/v8/WorkerOrWorkletScriptController.cpp
[modify] https://crrev.com/59028394b71ed30f862465017f78db9de0f517f8/third_party/WebKit/Source/bindings/core/v8/WorkerOrWorkletScriptController.h
[modify] https://crrev.com/59028394b71ed30f862465017f78db9de0f517f8/third_party/WebKit/Source/core/frame/HostsUsingFeatures.cpp
[modify] https://crrev.com/59028394b71ed30f862465017f78db9de0f517f8/third_party/WebKit/Source/core/inspector/MainThreadDebugger.cpp
[modify] https://crrev.com/59028394b71ed30f862465017f78db9de0f517f8/third_party/WebKit/Source/core/workers/WorkerThread.cpp
[modify] https://crrev.com/59028394b71ed30f862465017f78db9de0f517f8/third_party/WebKit/Source/modules/csspaint/PaintWorkletGlobalScope.cpp
[modify] https://crrev.com/59028394b71ed30f862465017f78db9de0f517f8/third_party/WebKit/Source/platform/bindings/DOMWrapperWorld.cpp
[modify] https://crrev.com/59028394b71ed30f862465017f78db9de0f517f8/third_party/WebKit/Source/platform/bindings/DOMWrapperWorld.h
[modify] https://crrev.com/59028394b71ed30f862465017f78db9de0f517f8/third_party/WebKit/Source/web/WebLocalFrameImpl.cpp