[InputEvent] Support |deleteByDrag| and |insertFromDrop|

third_party/WebKit/Source/core/editing/Editor.cpp

Index: third_party/WebKit/Source/core/editing/Editor.cpp
diff --git a/third_party/WebKit/Source/core/editing/Editor.cpp b/third_party/WebKit/Source/core/editing/Editor.cpp
index 428331d3e5ae2796fbebc10dec8be0ffe18ef462..463af6a2d7102545212a546af54db6ae19331501 100644
--- a/third_party/WebKit/Source/core/editing/Editor.cpp
+++ b/third_party/WebKit/Source/core/editing/Editor.cpp
@@ -104,14 +104,21 @@ void dispatchInputEvent(Element* target, InputEvent::InputType inputType, const
         return;
     if (!target)
         return;
-    // TODO(chongz): Pass appreciate |ranges| after it's defined on spec.
-    // http://w3c.github.io/editing/input-events.html#dom-inputevent-inputtype
     InputEvent* inputEvent = InputEvent::createInput(inputType, data, isComposing, nullptr);
     target->dispatchScopedEvent(inputEvent);
 }
 
 void dispatchInputEventEditableContentChanged(Element* startRoot, Element* endRoot, InputEvent::InputType inputType, const String& data, InputEvent::EventIsComposing isComposing)
 {
+    if (inputType == InputEvent::InputType::MoveByDragDrop) {
+        // Drag&Drop will be combined into one |MoveSelectionCommand|, we need to split it into |DeleteByDrag| and |InsertFromDrop|.
+        if (startRoot)
+            dispatchInputEvent(startRoot, InputEvent::InputType::DeleteByDrag, data, isComposing);
+        if (endRoot)
+            dispatchInputEvent(endRoot, InputEvent::InputType::InsertFromDrop, data, isComposing);
+        return;
+    }
+
     if (startRoot)
         dispatchInputEvent(startRoot, inputType, data, isComposing);
     if (endRoot && endRoot != startRoot)
@@ -560,7 +567,7 @@ void Editor::replaceSelectionAfterDragging(DocumentFragment* fragment, bool smar
     if (plainText)
         options |= ReplaceSelectionCommand::MatchStyle;
     DCHECK(frame().document());
-    ReplaceSelectionCommand::create(*frame().document(), fragment, options, InputEvent::InputType::Drag)->apply();
+    ReplaceSelectionCommand::create(*frame().document(), fragment, options, InputEvent::InputType::InsertFromDrop)->apply();
 }
 
 void Editor::moveSelectionAfterDragging(DocumentFragment* fragment, const Position& pos, bool smartInsert, bool smartDelete)