Define algorithms for the HTML spec to call when a navigable is created or destroyed (#708)

* Link browsingContext.contextCreated to the html spec

* remove html patch

Author: OrKoN

index.bs

@@ -4155,14 +4155,14 @@ To <dfn>Emit a context created event</dfn> given |session| and |context|:
 
 </div>
 
-<div algorithm="remote end event trigger for browsingContext.contextCreated">
 
-The [=remote end event trigger=] is:
+<div algorithm="remote end event trigger for browsingContext.contextCreated">
 
-When the [=create a new browsing context=] algorithm is invoked, after the
-[=active document=] of the browsing context is set, run the following steps:
+The [=remote end event trigger=] is
+the <dfn export>WebDriver BiDi navigable created</dfn> steps given
+|navigable|:
 
-1. Let |context| be the newly created browsing context.
+1. Let |context| be |navigable|'s [=active browsing context=].
 
 1. Let |related browsing contexts| be a [=/set=] containing |context|.
 
@@ -4202,9 +4202,9 @@ The [=remote end event trigger=] is:
 
 <div algorithm="remote end event trigger for browsingContext.contexDestroyed">
 
-Define the following [=browsing context tree discarded=] steps:
-
-1. Let |context| be the browsing context being discarded.
+The [=remote end event trigger=] is
+the <dfn export>WebDriver BiDi navigable destroyed</dfn> steps given
+<var ignore>navigable</var> and |context|:
 
 1. Let |params| be the result of [=get the browsing context info=], given
    |context|, null, and true.
@@ -10706,27 +10706,6 @@ as part of the standards process.
 
 ## HTML ##  {#patches-html}
 
-The [=a browsing context is discarded=] algorithm is modified to read as follows:
-
-<div algorithm>
-To discard a browsing context |browsingContext|, run these steps:
-
-1. If this is not a recursive invocation of this algorithm, call any <dfn export>browsing context
-   tree discarded</dfn> steps defined in other applicable specifications with |browsingContext|.
-
-1. Discard all {{Document}} objects for all the entries in |browsingContext|'s
-   [=session history=].
-
-1. If |browsingContext| is a [=top-level browsing context=], then [=remove a browsing context=]
-   |browsingContext|.
-
-</div>
-
-Issue: The actual patch might be better to split the algorithm into an outer algorithm that is
-called by external callers and an inner algorithm that's used for recursive calls. That's quite hard
-to express as a patch to the specification since it requires changing multiple parts.
-
-
 The [=report an error=] algorithm is modified with an additional step at the
 end: