Fix the bug that matras are input twice for Indian languages.

third_party/WebKit/Source/core/editing/commands/TypingCommand.cpp

Index: third_party/WebKit/Source/core/editing/commands/TypingCommand.cpp
diff --git a/third_party/WebKit/Source/core/editing/commands/TypingCommand.cpp b/third_party/WebKit/Source/core/editing/commands/TypingCommand.cpp
index 8e56bf043bffd04250b746a2b13d18410291902b..16fc6d7d6fa062bb8532dd0d3a26c24872f29dcb 100644
--- a/third_party/WebKit/Source/core/editing/commands/TypingCommand.cpp
+++ b/third_party/WebKit/Source/core/editing/commands/TypingCommand.cpp
@@ -40,6 +40,7 @@
 #include "core/editing/commands/InsertTextCommand.h"
 #include "core/editing/spellcheck/SpellChecker.h"
 #include "core/events/BeforeTextInsertedEvent.h"
+#include "core/events/TextEvent.h"
 #include "core/frame/LocalFrame.h"
 #include "core/html/HTMLBRElement.h"
 #include "core/layout/LayoutObject.h"
@@ -140,11 +141,8 @@ void TypingCommand::updateSelectionIfDifferentFromCurrentSelection(TypingCommand
     typingCommand->setEndingSelection(currentSelection);
 }
 
-static String dispatchBeforeTextInsertedEvent(const String& text, const VisibleSelection& selectionForInsertion, bool insertionIsForUpdatingComposition)
+static String dispatchBeforeTextInsertedEvent(const String& text, const VisibleSelection& selectionForInsertion)
 {
-    if (insertionIsForUpdatingComposition)
-        return text;
-
     String newText = text;
     if (Node* startNode = selectionForInsertion.start().computeContainerNode()) {
         if (startNode->rootEditableElement()) {
@@ -157,6 +155,19 @@ static String dispatchBeforeTextInsertedEvent(const String& text, const VisibleS
     return newText;
 }
 
+static String dispatchTextInputEvent(LocalFrame* frame, const String& text, const VisibleSelection& selectionForInsertion)
+{
+    String newText = text;
+    Element* target = frame->document()->focusedElement();
+    if (target) {
+        // Send TextInputEvent. The event handler will update text if necessary.
+        TextEvent* event = TextEvent::create(frame->domWindow(), text, TextEventInputDrop);
+        target->dispatchEvent(event);
+        newText = event->data();
+    }
+    return newText;
+}
+
 void TypingCommand::insertText(Document& document, const String& text, Options options, TextCompositionType composition)
 {
     LocalFrame* frame = document.frame();
@@ -176,7 +187,12 @@ void TypingCommand::insertText(Document& document, const String& text, const Vis
 
     VisibleSelection currentSelection = frame->selection().selection();
 
-    String newText = dispatchBeforeTextInsertedEvent(text, selectionForInsertion, compositionType == TextCompositionUpdate);
+    String newText = text;
+    if (compositionType != TextCompositionUpdate)
+        newText = dispatchBeforeTextInsertedEvent(text, selectionForInsertion);
+
+    if (compositionType == TextCompositionConfirm)
+        newText = dispatchTextInputEvent(frame, newText, selectionForInsertion);
 
     // Set the starting and ending selection appropriately if we are using a selection
     // that is different from the current selection.  In the future, we should change EditCommand