Add live region root to the cached properties of an AXObject.

Source/core/accessibility/AXRenderObject.cpp

Index: Source/core/accessibility/AXRenderObject.cpp
diff --git a/Source/core/accessibility/AXRenderObject.cpp b/Source/core/accessibility/AXRenderObject.cpp
index 99e278baf81936cebc3320ad5c0e24d3f31105dd..c122cd1815112cc9e33c3388a379d68b119c93dd 100644
--- a/Source/core/accessibility/AXRenderObject.cpp
+++ b/Source/core/accessibility/AXRenderObject.cpp
@@ -1123,7 +1123,7 @@ bool AXRenderObject::supportsARIAOwns() const
 // ARIA live-region features.
 //
 
-const AtomicString& AXRenderObject::ariaLiveRegionStatus() const
+const AtomicString& AXRenderObject::liveRegionStatus() const
 {
     DEFINE_STATIC_LOCAL(const AtomicString, liveRegionStatusAssertive, ("assertive", AtomicString::ConstructFromLiteral));
     DEFINE_STATIC_LOCAL(const AtomicString, liveRegionStatusPolite, ("polite", AtomicString::ConstructFromLiteral));
@@ -1150,7 +1150,7 @@ const AtomicString& AXRenderObject::ariaLiveRegionStatus() const
     return liveRegionStatus;
 }
 
-const AtomicString& AXRenderObject::ariaLiveRegionRelevant() const
+const AtomicString& AXRenderObject::liveRegionRelevant() const
 {
     DEFINE_STATIC_LOCAL(const AtomicString, defaultLiveRegionRelevant, ("additions text", AtomicString::ConstructFromLiteral));
     const AtomicString& relevant = getAttribute(aria_relevantAttr);
@@ -1162,12 +1162,12 @@ const AtomicString& AXRenderObject::ariaLiveRegionRelevant() const
     return relevant;
 }
 
-bool AXRenderObject::ariaLiveRegionAtomic() const
+bool AXRenderObject::liveRegionAtomic() const
 {
     return elementAttributeValue(aria_atomicAttr);
 }
 
-bool AXRenderObject::ariaLiveRegionBusy() const
+bool AXRenderObject::liveRegionBusy() const
 {
     return elementAttributeValue(aria_busyAttr);
 }