Removes the restriction placed on the role of the accessibility object when calling the next/previo…

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

 /*
 * Copyright (C) 2008 Apple Inc. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1.  Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 * 2.  Redistributions in binary form must reproduce the above copyright
@@ skipping 1000 matching lines @@
 {
     if (!getLayoutObject() || !getLayoutObject()->isText())
         return;
 
     clearChildren();
     addInlineTextBoxChildren(true);
 }
 
 AXObject* AXLayoutObject::nextOnLine() const
 {
-    if (!m_layoutObject)
-        return 0;
+    if (!getLayoutObject())
+        return nullptr;
 
-    InlineBox* inlineBox;
-    if (m_layoutObject->isLayoutInline())
-        inlineBox = toLayoutInline(m_layoutObject)->lastLineBox();
-    else if (m_layoutObject->isText())
-        inlineBox = toLayoutText(m_layoutObject)->lastTextBox();
-    else
-        return 0;
+    InlineBox* inlineBox = nullptr;
+    if (getLayoutObject()->isLayoutInline())
+        inlineBox = toLayoutInline(getLayoutObject())->lastLineBox();
+    else if (getLayoutObject()->isText())
+        inlineBox = toLayoutText(getLayoutObject())->lastTextBox();
 
-    AXObject* result = 0;
+    if (!inlineBox)
+        return nullptr;
+
+    AXObject* result = nullptr;
     for (InlineBox* next = inlineBox->nextOnLine(); next; next = next->nextOnLine()) {
         LayoutObject* layoutObject = LineLayoutAPIShim::layoutObjectFrom(next->getLineLayoutItem());
         result = axObjectCache().getOrCreate(layoutObject);
         if (result)
             break;
     }
 
     // A static text node might span multiple lines. Try to return the first inline
     // text box within that static text if possible.
     if (result && result->roleValue() == StaticTextRole && result->children().size())
         result = result->children()[0].get();
 
     return result;
 }
 
 AXObject* AXLayoutObject::previousOnLine() const
 {
-    if (!m_layoutObject)
-        return 0;
+    if (!getLayoutObject())
+        return nullptr;
 
-    InlineBox* inlineBox;
-    if (m_layoutObject->isLayoutInline())
-        inlineBox = toLayoutInline(m_layoutObject)->firstLineBox();
-    else if (m_layoutObject->isText())
-        inlineBox = toLayoutText(m_layoutObject)->firstTextBox();
-    else
-        return 0;
+    InlineBox* inlineBox = nullptr;
+    if (getLayoutObject()->isLayoutInline())
+        inlineBox = toLayoutInline(getLayoutObject())->firstLineBox();
+    else if (getLayoutObject()->isText())
+        inlineBox = toLayoutText(getLayoutObject())->firstTextBox();
 
-    AXObject* result = 0;
+    if (!inlineBox)
+        return nullptr;
+
+    AXObject* result = nullptr;
     for (InlineBox* prev = inlineBox->prevOnLine(); prev; prev = prev->prevOnLine()) {
         LayoutObject* layoutObject = LineLayoutAPIShim::layoutObjectFrom(prev->getLineLayoutItem());
         result = axObjectCache().getOrCreate(layoutObject);
         if (result)
             break;
     }
 
     // A static text node might span multiple lines. Try to return the last inline
     // text box within that static text if possible.
     if (result && result->roleValue() == StaticTextRole && result->children().size())
@@ skipping 1393 matching lines @@
         if (label && label->layoutObject()) {
             LayoutRect labelRect = axObjectCache().getOrCreate(label)->elementRect();
             result.unite(labelRect);
         }
     }
 
     return result;
 }
 
 } // namespace blink