[InputEvent] Move 'beforeinput' logic into |CompositeEditCommand::willApplyEditing()| (3/3)

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 29a17ac75d586f4724334baaaa8010122d4aa1ac..2649849c3e1c27cf136927745dd68330137a46fe 100644
--- a/third_party/WebKit/Source/core/editing/commands/CompositeEditCommand.cpp
+++ b/third_party/WebKit/Source/core/editing/commands/CompositeEditCommand.cpp
@@ -201,8 +201,9 @@ bool CompositeEditCommand::apply() {
       case InputEvent::InputType::DeleteComposedCharacterBackward:
       case InputEvent::InputType::DeleteWordBackward:
       case InputEvent::InputType::DeleteWordForward:
-      case InputEvent::InputType::DeleteLineBackward:
-      case InputEvent::InputType::DeleteLineForward:
+      case InputEvent::InputType::DeleteSoftLineBackward:
+      case InputEvent::InputType::DeleteSoftLineForward:
+      case InputEvent::InputType::DeleteContent:
       case InputEvent::InputType::DeleteContentBackward:
       case InputEvent::InputType::DeleteContentForward:
       case InputEvent::InputType::DeleteByCut:
@@ -223,6 +224,11 @@ bool CompositeEditCommand::apply() {
   // the creation of VisiblePositions).
   document().updateStyleAndLayoutIgnorePendingStylesheets();
 
+  // Covers the initial TypingCommand and other top-level commands.
+  // See TypingCommand::willAddTypingToOpenCommand().
+  if (!willApply())
+    return false;
+
   LocalFrame* frame = document().frame();
   DCHECK(frame);
   EditingState editingState;
@@ -430,6 +436,10 @@ void CompositeEditCommand::insertNodeAt(Node* insertChild,
   }
 }
 
+bool CompositeEditCommand::willApply() {
+  return document().frame()->editor().willApplyEditing(this);
+}
+
 void CompositeEditCommand::appendNode(Node* node,
                                       ContainerNode* parent,
                                       EditingState* editingState) {