ASSERT -> DCHECK conversions in core/editing.

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

 /*
  * Copyright (C) 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 171 matching lines @@
     if (!endingSelection().isContentRichlyEditable()) {
         switch (editingAction()) {
         case EditActionTyping:
         case EditActionPaste:
         case EditActionDrag:
         case EditActionSetWritingDirection:
         case EditActionCut:
         case EditActionUnspecified:
             break;
         default:
-            ASSERT_NOT_REACHED();
+            NOTREACHED();
             return false;
         }
     }
     ensureComposition();
 
     // Changes to the document may have been made since the last editing operation that require a layout, as in <rdar://problem/5658603>.
     // Low level operations, like RemoveNodeCommand, don't require a layout because the high level operations that use them perform one
     // if one is necessary (like for the creation of VisiblePositions).
     document().updateStyleAndLayoutIgnorePendingStylesheets();
 
@@ skipping 371 matching lines @@
 }
 
 Position CompositeEditCommand::positionOutsideTabSpan(const Position& pos)
 {
     if (!isTabHTMLSpanElementTextNode(pos.anchorNode()))
         return pos;
 
     switch (pos.anchorType()) {
     case PositionAnchorType::BeforeChildren:
     case PositionAnchorType::AfterChildren:
-        ASSERT_NOT_REACHED();
+        NOTREACHED();
         return pos;
     case PositionAnchorType::OffsetInAnchor:
         break;
     case PositionAnchorType::BeforeAnchor:
         return Position::inParentBeforeNode(*pos.anchorNode());
     case PositionAnchorType::AfterAnchor:
         return Position::inParentAfterNode(*pos.anchorNode());
     }
 
     HTMLSpanElement* tabSpan = tabSpanElement(pos.computeContainerNode());
@@ skipping 1022 matching lines @@
 }
 
 DEFINE_TRACE(CompositeEditCommand)
 {
     visitor->trace(m_commands);
     visitor->trace(m_composition);
     EditCommand::trace(visitor);
 }
 
 } // namespace blink