Adding a word to dictionary should remove spelling markers

Source/core/dom/DocumentMarkerController.cpp

Index: Source/core/dom/DocumentMarkerController.cpp
diff --git a/Source/core/dom/DocumentMarkerController.cpp b/Source/core/dom/DocumentMarkerController.cpp
index 5a7cc9b47afb89e7f4f28bc2d60120995ec16109..87da3061bfe65383c7a921a0758dde32e940e42d 100644
--- a/Source/core/dom/DocumentMarkerController.cpp
+++ b/Source/core/dom/DocumentMarkerController.cpp
@@ -31,6 +31,7 @@
 #include "core/dom/NodeTraversal.h"
 #include "core/dom/Range.h"
 #include "core/dom/RenderedDocumentMarker.h"
+#include "core/dom/Text.h"
 #include "core/editing/TextIterator.h"
 #include "core/rendering/RenderObject.h"
 
@@ -40,6 +41,20 @@
 
 namespace blink {
 
+MarkerRemoverPredicate::MarkerRemoverPredicate(const Vector<String>& words)
+    : m_words(words)
+{
+}
+
+bool MarkerRemoverPredicate::operator()(const DocumentMarker& documentMarker,
+    const Text* textNode) const {
+    unsigned start  = documentMarker.startOffset();
+    unsigned length = documentMarker.endOffset() - documentMarker.startOffset();
+
+    String markerText = textNode->data().substring(start, length);
+    return m_words.contains(markerText);
+}
+
 namespace {
 
 DocumentMarker::MarkerTypeIndex MarkerTypeToMarkerIndex(DocumentMarker::MarkerType type)
@@ -494,6 +509,25 @@ void DocumentMarkerController::removeMarkers(Node* node, DocumentMarker::MarkerT
         removeMarkersFromList(iterator, markerTypes);
 }
 
+void DocumentMarkerController::removeMarkers(const MarkerRemoverPredicate& shouldRemoveMarker)
+{
+    for (MarkerMap::iterator i = m_markers.begin(); i != m_markers.end(); ++i) {
+        MarkerLists* markers = i->value.get();
+        for (size_t markerListIndex = 0; markerListIndex < DocumentMarker::MarkerTypeIndexesCount; ++markerListIndex) {
+            OwnPtrWillBeMember<MarkerList>& list = (*markers)[markerListIndex];
+
+            Vector<RenderedDocumentMarker *> markersToBeRemoved;
+            for (size_t j = 0; list.get() && j < list->size(); ++j) {
+                if (i->key->isTextNode() && shouldRemoveMarker(*list->at(j).get(), static_cast<const Text*>(i->key)))
+                    markersToBeRemoved.append(list->at(j).get());
+            }
+
+            for (size_t j = 0; j < markersToBeRemoved.size(); ++j)
+                list->remove(list->find(markersToBeRemoved[j]));
+        }
+    }
+}
+
 void DocumentMarkerController::removeMarkers(DocumentMarker::MarkerTypes markerTypes)
 {
     if (!possiblyHasMarkers(markerTypes))