Merge SecurityOrigin::canAccessCheckSuborigins into canAccess

third_party/WebKit/Source/SpecMapping.md

 # Mapping of spec concepts to code
 
 Blink is Chromium's implementation of the open web platform. This document
 attempts to map terms and concepts found in the specification of the open web
 platform to classes and files found in Blink's source tree.
 
 [TOC]
 
 ## HTML
 
@@ skipping 10 matching lines @@
 
 An origin corresponds to the
 [SecurityOrigin](https://cs.chromium.org/src/third_party/WebKit/Source/platform/weborigin/SecurityOrigin.h)
 class. You can test for
 [same-origin](https://html.spec.whatwg.org/multipage/browsers.html#same-origin)
 using `SecurityOrigin::canAccess` and for [same-origin
 domain](https://html.spec.whatwg.org/multipage/browsers.html#same-origin-domain)
 using `SecurityOrigin::isSameSchemeHostPort`.
 
 The [Suborigins spec](https://w3c.github.io/webappsec-suborigins/) extends
-HTML's definition of origins. To check for same-origin and same-origin domain
-use `SecurityOrigin::canAccessCheckSuborigins` and
-`SecurityOrigin::isSameSchemeHostPortAndSuborigin`.
+HTML's definition of origins. To check for same-origin corresponds to
+`SecurityOrigin::isSameSchemeHostPortAndSuborigin` while the check for same-origin
+domain already takes the suborigin into account.
 
 ### [Window object](https://html.spec.whatwg.org/#window)
 
 A Window object corresponds to the
 [DOMWindow](https://cs.chromium.org/src/third_party/WebKit/Source/core/frame/DOMWindow.h)
 interface where the main implementation is
 [LocalDOMWindow](https://cs.chromium.org/src/third_party/WebKit/Source/core/frame/LocalDOMWindow.h).
 
 ### [WindowProxy](https://html.spec.whatwg.org/#windowproxy)
 
@@ skipping 16 matching lines @@
 [2D canvas context](https://html.spec.whatwg.org/multipage/scripting.html#canvasrenderingcontext2d)
 is implemented in
 [modules/canvas2d](https://cs.chromium.org/chromium/src/third_party/WebKit/Source/modules/canvas2d/).
 
 The
 [WebGL 1.0](https://www.khronos.org/registry/webgl/specs/latest/1.0/)
 and
 [WebGL 2.0](https://www.khronos.org/registry/webgl/specs/latest/2.0/)
 contexts ([Github repo](https://github.com/KhronosGroup/WebGL)) are
 implemented in [modules/webgl](https://cs.chromium.org/chromium/src/third_party/WebKit/Source/modules/webgl/).