Remove unused [RaisesException] for createNodeIterator() and createTreeWalker()

third_party/WebKit/Source/core/dom/Document.cpp

Index: third_party/WebKit/Source/core/dom/Document.cpp
diff --git a/third_party/WebKit/Source/core/dom/Document.cpp b/third_party/WebKit/Source/core/dom/Document.cpp
index 5163577596583956aac44fb63d5c25e8caec1774..0cc44f60b21f2872ff86d80a2a5474493aff3c52 100644
--- a/third_party/WebKit/Source/core/dom/Document.cpp
+++ b/third_party/WebKit/Source/core/dom/Document.cpp
@@ -1462,15 +1462,15 @@ PassRefPtrWillBeRawPtr<Range> Document::createRange()
     return Range::create(*this);
 }
 
-PassRefPtrWillBeRawPtr<NodeIterator> Document::createNodeIterator(Node* root, unsigned whatToShow, PassRefPtrWillBeRawPtr<NodeFilter> filter, ExceptionState& exceptionState)
+PassRefPtrWillBeRawPtr<NodeIterator> Document::createNodeIterator(Node* root, unsigned whatToShow, PassRefPtrWillBeRawPtr<NodeFilter> filter)
 {
-    // FIXME: It might be a good idea to emit a warning if |whatToShow| contains a bit that is not defined in
-    // NodeFilter.
+    ASSERT(root);
     return NodeIterator::create(root, whatToShow, filter);
 }
 
-PassRefPtrWillBeRawPtr<TreeWalker> Document::createTreeWalker(Node* root, unsigned whatToShow, PassRefPtrWillBeRawPtr<NodeFilter> filter, ExceptionState& exceptionState)
+PassRefPtrWillBeRawPtr<TreeWalker> Document::createTreeWalker(Node* root, unsigned whatToShow, PassRefPtrWillBeRawPtr<NodeFilter> filter)
 {
+    ASSERT(root);
     return TreeWalker::create(root, whatToShow, filter);
 }