Chunk up the text to spell check also when the text is pasted.

Source/core/editing/Editor.cpp

Index: Source/core/editing/Editor.cpp
diff --git a/Source/core/editing/Editor.cpp b/Source/core/editing/Editor.cpp
index 556bf22118b5062b2757cdff56c926b01b243d6b..db17a00518cc256351b7c7781f7f5f1348003d93 100644
--- a/Source/core/editing/Editor.cpp
+++ b/Source/core/editing/Editor.cpp
@@ -419,9 +419,9 @@ void Editor::replaceSelectionWithFragment(PassRefPtr<DocumentFragment> fragment,
     Node* nodeToCheck = m_frame->selection()->rootEditableElement();
     if (!nodeToCheck)
         return;
-
     RefPtr<Range> rangeToCheck = Range::create(m_frame->document(), firstPositionInNode(nodeToCheck), lastPositionInNode(nodeToCheck));
-    m_spellCheckRequester->requestCheckingFor(SpellCheckRequest::create(resolveTextCheckingTypeMask(TextCheckingTypeSpelling | TextCheckingTypeGrammar), TextCheckingProcessBatch, rangeToCheck, rangeToCheck));
+    TextCheckingParagraph textToCheck(rangeToCheck, rangeToCheck);
+    chunkAndMarkAllMisspellingsAndBadGrammar(resolveTextCheckingTypeMask(TextCheckingTypeSpelling | TextCheckingTypeGrammar), textToCheck, true);
 }
 
 void Editor::replaceSelectionWithText(const String& text, bool selectReplacement, bool smartReplace)
@@ -1509,6 +1509,13 @@ void Editor::markAllMisspellingsAndBadGrammarInRanges(TextCheckingTypeMask textC
 
     Range* rangeToCheck = shouldMarkGrammar ? grammarRange : spellingRange;
     TextCheckingParagraph fullParagraphToCheck(rangeToCheck);
+
+    bool asynchronous = m_frame && m_frame->settings() && m_frame->settings()->asynchronousSpellCheckingEnabled();
+    chunkAndMarkAllMisspellingsAndBadGrammar(textCheckingOptions, fullParagraphToCheck, asynchronous);
+}
+
+void Editor::chunkAndMarkAllMisspellingsAndBadGrammar(TextCheckingTypeMask textCheckingOptions, const TextCheckingParagraph& fullParagraphToCheck, bool asynchronous)
+{
     if (fullParagraphToCheck.isRangeEmpty() || fullParagraphToCheck.isEmpty())
         return;
 
@@ -1518,10 +1525,9 @@ void Editor::markAllMisspellingsAndBadGrammarInRanges(TextCheckingTypeMask textC
     int end = fullParagraphToCheck.checkingEnd();
     start = std::min(start, end);
     end = std::max(start, end);
-    bool asynchronous = m_frame && m_frame->settings() && m_frame->settings()->asynchronousSpellCheckingEnabled();
     const int kNumChunksToCheck = asynchronous ? (end - start + kChunkSize - 1) / (kChunkSize) : 1;
     int currentChunkStart = start;
-    RefPtr<Range> checkRange = asynchronous ? fullParagraphToCheck.paragraphRange() : rangeToCheck;
+    RefPtr<Range> checkRange = asynchronous ? fullParagraphToCheck.paragraphRange() : fullParagraphToCheck.checkingRange();
     RefPtr<Range> paragraphRange = fullParagraphToCheck.paragraphRange();
     if (kNumChunksToCheck == 1 && asynchronous) {
         markAllMisspellingsAndBadGrammarInRanges(textCheckingOptions, checkRange.get(), paragraphRange.get(), asynchronous, 0);