Add/remove spell checking markers in text inputs depending on focus.

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 9603d240363e3b24ba2c5496e156744d29893e5e..e741e7dbeac2e6addceaa2af91a0bf396634cfe3 100644
--- a/Source/core/editing/SpellChecker.cpp
+++ b/Source/core/editing/SpellChecker.cpp
@@ -197,6 +197,12 @@ void SpellChecker::cancelCheck()
         m_processingRequest->didCancel();
 }
 
+void SpellChecker::cancelProcessingRequest()
+{
+    if (m_processingRequest)
+        m_processingRequest->didCancel();
+}
+
 void SpellChecker::invokeRequest(PassRefPtr<SpellCheckRequest> request)
 {
     ASSERT(!m_processingRequest);