Remove spelling markers when disabling spellcheck

chrome/renderer/spellchecker/spellcheck_provider.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/renderer/spellchecker/spellcheck_provider.h"
 
 #include "base/command_line.h"
 #include "base/metrics/histogram.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/spellcheck_messages.h"
@@ skipping 282 matching lines @@
       WebString::fromUTF8("ToggleSpellPanel"));
 }
 #endif
 
 void SpellCheckProvider::EnableSpellcheck(bool enable) {
   if (!render_view()->GetWebView())
     return;
 
   WebFrame* frame = render_view()->GetWebView()->focusedFrame();
   frame->enableContinuousSpellChecking(enable);
+  if (!enable)
+    frame->removeSpellingMarkers();
 }
 
 bool SpellCheckProvider::SatisfyRequestFromCache(
     const WebString& text,
     WebTextCheckingCompletion* completion) {
   size_t last_length = last_request_.length();
 
   // Send back the |last_results_| if the |last_request_| is a substring of
   // |text| and |text| does not have more words to check. Provider cannot cancel
   // the spellcheck request here, because WebKit might have discarded the
@@ skipping 35 matching lines @@
         results[i].length = last_results_[i].length;
         results[i].replacement = last_results_[i].replacement;
       }
       completion->didFinishCheckingText(results);
       return true;
     }
   }
 
   return false;
 }