Make InlineBoxPosition constructor not to accept null-InlineBox

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

Index: third_party/WebKit/Source/core/editing/VisibleUnitsTest.cpp
diff --git a/third_party/WebKit/Source/core/editing/VisibleUnitsTest.cpp b/third_party/WebKit/Source/core/editing/VisibleUnitsTest.cpp
index f463135aafb1ccc858fa1f42bf9e1796366e69de..6b2f9149f8df5f2a57b0a5ebff194ce4bdec4445 100644
--- a/third_party/WebKit/Source/core/editing/VisibleUnitsTest.cpp
+++ b/third_party/WebKit/Source/core/editing/VisibleUnitsTest.cpp
@@ -303,9 +303,7 @@ TEST_F(VisibleUnitsTest, ComputeInlineBoxPositionMixedEditable) {
       Position::LastPositionInNode(sample), TextAffinity::kDownstream);
   // Should not be in infinite-loop
   EXPECT_EQ(nullptr, actual.inline_box);
-  // TODO(editing-dev): We should return 0 for |InlineBoxPosition| when
-  // |inline_box| is null.
-  EXPECT_EQ(2, actual.offset_in_box);
+  EXPECT_EQ(0, actual.offset_in_box);
 }
 
 TEST_F(VisibleUnitsTest, endOfDocument) {