Bug 1553705 - Use a cheaper to compute state key for parser inserted …

…form controls. r=smaug

Differential Revision: https://phabricator.services.mozilla.com/D32259

UltraBlame original commit: fbb26a04ec1f69879c85249da04fe3b971928ff0

accessible/generic/Accessible.cpp

@@ -319,6 +319,17 @@ h
 #
 include
 "
+mozilla
+/
+dom
+/
+HTMLFormElement
+.
+h
+"
+#
+include
+"
 nsIContent
 .
 h
@@ -12597,27 +12608,22 @@ if
 control
 )
 {
-nsCOMPtr
-<
-nsIForm
->
-form
-(
-do_QueryInterface
+if
 (
+dom
+:
+:
+HTMLFormElement
+*
+form
+=
 control
 -
 >
 GetFormElement
 (
 )
 )
-)
-;
-if
-(
-form
-)
 {
 nsCOMPtr
 <

dom/base/Document.cpp

@@ -8647,6 +8647,14 @@ mInRDMPane
 (
 false
 )
+mNextFormNumber
+(
+0
+)
+mNextControlNumber
+(
+0
+)
 {
 MOZ_LOG
 (

dom/base/Document.h

@@ -9342,6 +9342,94 @@ uint16_t
 aKeyPressEventModel
 )
 ;
+/
+/
+Gets
+the
+next
+form
+number
+.
+/
+/
+/
+/
+Used
+by
+nsContentUtils
+:
+:
+GenerateStateKey
+to
+get
+a
+unique
+number
+for
+each
+/
+/
+parser
+inserted
+form
+element
+.
+int32_t
+GetNextFormNumber
+(
+)
+{
+return
+mNextFormNumber
++
++
+;
+}
+/
+/
+Gets
+the
+next
+form
+control
+number
+.
+/
+/
+/
+/
+Used
+by
+nsContentUtils
+:
+:
+GenerateStateKey
+to
+get
+a
+unique
+number
+for
+each
+/
+/
+parser
+inserted
+form
+control
+element
+.
+int32_t
+GetNextControlNumber
+(
+)
+{
+return
+mNextControlNumber
++
++
+;
+}
 protected
 :
 friend
@@ -31582,6 +31670,19 @@ nsIPrincipal
 >
 mIntrinsicStoragePrincipal
 ;
+/
+/
+See
+GetNextFormNumber
+and
+GetNextControlNumber
+.
+int32_t
+mNextFormNumber
+;
+int32_t
+mNextControlNumber
+;
 public
 :
 /