Trigger spell check/remove markers if spell checker gets enabled/disabled.

Source/core/editing/SpellChecker.cpp

Index: Source/core/editing/SpellChecker.cpp
diff --git a/Source/core/editing/SpellChecker.cpp b/Source/core/editing/SpellChecker.cpp
index 97c1fd81bc82e9ec410b67c50c2872dbc4045c64..776b38a9abebb2dc6af918478f8f5e968ff461db 100644
--- a/Source/core/editing/SpellChecker.cpp
+++ b/Source/core/editing/SpellChecker.cpp
@@ -46,12 +46,14 @@ SpellCheckRequest::SpellCheckRequest(
         TextCheckingTypeMask mask,
         TextCheckingProcessType processType,
         const Vector<uint32_t>& documentMarkersInRange,
-        const Vector<unsigned>& documentMarkerOffsets)
+        const Vector<unsigned>& documentMarkerOffsets,
+        int requestNo)
     : m_checker(0)
     , m_checkingRange(checkingRange)
     , m_paragraphRange(paragraphRange)
     , m_rootEditableElement(m_checkingRange->startContainer()->rootEditableElement())
     , m_requestData(unrequestedTextCheckingSequence, text, mask, processType, documentMarkersInRange, documentMarkerOffsets)
+    , m_requestNo(requestNo)
 {
 }
 
@@ -62,6 +64,12 @@ SpellCheckRequest::~SpellCheckRequest()
 // static
 PassRefPtr<SpellCheckRequest> SpellCheckRequest::create(TextCheckingTypeMask textCheckingOptions, TextCheckingProcessType processType, PassRefPtr<Range> checkingRange, PassRefPtr<Range> paragraphRange)
 {
+    return SpellCheckRequest::create(textCheckingOptions, processType, checkingRange, paragraphRange, 0);
+}
+
+// static
+PassRefPtr<SpellCheckRequest> SpellCheckRequest::create(TextCheckingTypeMask textCheckingOptions, TextCheckingProcessType processType, PassRefPtr<Range> checkingRange, PassRefPtr<Range> paragraphRange, int requestNo)
+{
     ASSERT(checkingRange);
     ASSERT(paragraphRange);
 
@@ -77,7 +85,7 @@ PassRefPtr<SpellCheckRequest> SpellCheckRequest::create(TextCheckingTypeMask tex
         offsets[i] = markers[i]->startOffset();
     }
 
-    return adoptRef(new SpellCheckRequest(checkingRange, paragraphRange, text, textCheckingOptions, processType, hashes, offsets));
+    return adoptRef(new SpellCheckRequest(checkingRange, paragraphRange, text, textCheckingOptions, processType, hashes, offsets, requestNo));
 }
 
 const TextCheckingRequestData& SpellCheckRequest::data() const
@@ -207,13 +215,21 @@ void SpellChecker::invokeRequest(PassRefPtr<SpellCheckRequest> request)
 void SpellChecker::enqueueRequest(PassRefPtr<SpellCheckRequest> request)
 {
     ASSERT(request);
+    bool continuation = false;
+    if (m_requestQueue.size() > 0) {
+        RefPtr<SpellCheckRequest> lastRequest = m_requestQueue.last();
+        continuation = request->rootEditableElement() == lastRequest->rootEditableElement()
+            && request->requestNo() == lastRequest->requestNo() + 1;
+    }
 
-    for (RequestQueue::iterator it = m_requestQueue.begin(); it != m_requestQueue.end(); ++it) {
-        if (request->rootEditableElement() != (*it)->rootEditableElement())
-            continue;
+    if (!continuation) {
+        for (RequestQueue::iterator it = m_requestQueue.begin(); it != m_requestQueue.end(); ++it) {
+            if (request->rootEditableElement() != (*it)->rootEditableElement())
+                continue;
 
-        *it = request;
-        return;
+            *it = request;
+            return;
+        }
     }
 
     m_requestQueue.append(request);