Move WebAXObject.cpp to core/ (WIP)

third_party/WebKit/Source/modules/accessibility/AXTableColumn.cpp

Index: third_party/WebKit/Source/modules/accessibility/AXTableColumn.cpp
diff --git a/third_party/WebKit/Source/modules/accessibility/AXTableColumn.cpp b/third_party/WebKit/Source/modules/accessibility/AXTableColumn.cpp
index 5f8563ac9976bc152b256dc5b3f987c7e625bd31..88430a4a2153995e13c6b07fc638ecea187d14dc 100644
--- a/third_party/WebKit/Source/modules/accessibility/AXTableColumn.cpp
+++ b/third_party/WebKit/Source/modules/accessibility/AXTableColumn.cpp
@@ -51,7 +51,7 @@ void AXTableColumn::SetParent(AXObjectImpl* parent) {
   ClearChildren();
 }
 
-void AXTableColumn::HeaderObjectsForColumn(AXObjectVector& headers) {
+void AXTableColumn::HeaderObjectsForColumn(AXObjectImplVector& headers) {
   if (!parent_)
     return;
 
@@ -98,7 +98,7 @@ void AXTableColumn::HeaderObjectsForColumn(AXObjectVector& headers) {
 }
 
 AXObjectImpl* AXTableColumn::HeaderObject() {
-  AXObjectVector headers;
+  AXObjectImplVector headers;
   HeaderObjectsForColumn(headers);
   if (!headers.size())
     return 0;