ASSERT -> DCHECK conversions in core/editing.

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

Index: third_party/WebKit/Source/core/editing/VisibleUnits.cpp
diff --git a/third_party/WebKit/Source/core/editing/VisibleUnits.cpp b/third_party/WebKit/Source/core/editing/VisibleUnits.cpp
index 4b32fb0874bc067f247b78be741e5ca81dd45747..dfcbf04dcadef935e8026b06e17c69129ef9b137 100644
--- a/third_party/WebKit/Source/core/editing/VisibleUnits.cpp
+++ b/third_party/WebKit/Source/core/editing/VisibleUnits.cpp
@@ -3180,7 +3180,7 @@ static VisiblePositionTemplate<Strategy> nextPositionOfAlgorithm(const VisiblePo
     case CanSkipOverEditingBoundary:
         return skipToEndOfEditingBoundary(next, visiblePosition.deepEquivalent());
     }
-    ASSERT_NOT_REACHED();
+    NOTREACHED();
     return honorEditingBoundaryAtOrAfter(next, visiblePosition.deepEquivalent());
 }
 
@@ -3243,7 +3243,7 @@ static VisiblePositionTemplate<Strategy> previousPositionOfAlgorithm(const Visib
         return skipToStartOfEditingBoundary(prev, visiblePosition.deepEquivalent());
     }
 
-    ASSERT_NOT_REACHED();
+    NOTREACHED();
     return honorEditingBoundaryAtOrBefore(prev, visiblePosition.deepEquivalent());
 }