[InputEvent] Support |deleteByDrag|, |insertFromDrop| and fire in sequential order

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

Index: third_party/WebKit/Source/core/editing/commands/CompositeEditCommand.cpp
diff --git a/third_party/WebKit/Source/core/editing/commands/CompositeEditCommand.cpp b/third_party/WebKit/Source/core/editing/commands/CompositeEditCommand.cpp
index 120f00edb91517313206fc29f7f3060a85c5169a..14914480fc27cc19e03f73fa6ce583baf6d93871 100644
--- a/third_party/WebKit/Source/core/editing/commands/CompositeEditCommand.cpp
+++ b/third_party/WebKit/Source/core/editing/commands/CompositeEditCommand.cpp
@@ -150,6 +150,11 @@ void EditCommandComposition::append(SimpleEditCommand* command)
     m_commands.append(command);
 }
 
+void EditCommandComposition::append(EditCommandComposition* composition)
+{
+    m_commands.appendVector(composition->m_commands);
+}
+
 void EditCommandComposition::setStartingSelection(const VisibleSelection& selection)
 {
     m_startingSelection = selection;
@@ -185,12 +190,14 @@ CompositeEditCommand::~CompositeEditCommand()
 
 bool CompositeEditCommand::apply()
 {
+    DCHECK(!isCommandGroupWrapper());
     if (!endingSelection().isContentRichlyEditable()) {
         switch (inputType()) {
         case InputEvent::InputType::InsertText:
         case InputEvent::InputType::InsertLineBreak:
         case InputEvent::InputType::InsertParagraph:
         case InputEvent::InputType::InsertFromPaste:
+        case InputEvent::InputType::InsertFromDrop:
         case InputEvent::InputType::DeleteComposedCharacterForward:
         case InputEvent::InputType::DeleteComposedCharacterBackward:
         case InputEvent::InputType::DeleteWordBackward:
@@ -200,7 +207,7 @@ bool CompositeEditCommand::apply()
         case InputEvent::InputType::DeleteContentBackward:
         case InputEvent::InputType::DeleteContentForward:
         case InputEvent::InputType::DeleteByCut:
-        case InputEvent::InputType::Drag:
+        case InputEvent::InputType::DeleteByDrag:
         case InputEvent::InputType::SetWritingDirection:
         case InputEvent::InputType::None:
             break;
@@ -252,6 +259,16 @@ bool CompositeEditCommand::isTypingCommand() const
     return false;
 }
 
+bool CompositeEditCommand::isCommandGroupWrapper() const
+{
+    return false;
+}
+
+bool CompositeEditCommand::isDragAndDropCommand() const
+{
+    return false;
+}
+
 bool CompositeEditCommand::isReplaceSelectionCommand() const
 {
     return false;
@@ -291,6 +308,13 @@ void CompositeEditCommand::applyCommandToComposite(CompositeEditCommand* command
         m_commands.append(command);
 }
 
+void CompositeEditCommand::appendCommandToComposite(CompositeEditCommand* command)
+{
+    ensureComposition()->append(command->ensureComposition());
+    command->setParent(this);
+    m_commands.append(command);
+}
+
 void CompositeEditCommand::applyStyle(const EditingStyle* style, EditingState* editingState)
 {
     applyCommandToComposite(ApplyStyleCommand::create(document(), style, InputEvent::InputType::ChangeAttributes), editingState);