Restore only the collapsed leading space when copy text

third_party/WebKit/Source/core/editing/iterators/TextIteratorTest.cpp

Index: third_party/WebKit/Source/core/editing/iterators/TextIteratorTest.cpp
diff --git a/third_party/WebKit/Source/core/editing/iterators/TextIteratorTest.cpp b/third_party/WebKit/Source/core/editing/iterators/TextIteratorTest.cpp
index 46b11e94f93c1601fa2d3adda753f0a7a85d10c7..1745c5855a0247003cde6198d783feb3582bcd1d 100644
--- a/third_party/WebKit/Source/core/editing/iterators/TextIteratorTest.cpp
+++ b/third_party/WebKit/Source/core/editing/iterators/TextIteratorTest.cpp
@@ -533,4 +533,13 @@ TEST_F(TextIteratorTest, PreserveLeadingSpace)
     EXPECT_EQ("foo bar", plainText(EphemeralRange(start, end), TextIteratorEmitsImageAltText));
 }
 
+TEST_F(TextIteratorTest, PreserveOnlyLeadingSpace)
+{
+    setBodyContent("<div style='width: 2em;'><b><i>foo </i></b> bar</div>");
+    Element* div = document().querySelector("div");
+    Position start(div->firstChild()->firstChild()->firstChild(), 0);

[yosin_UTC9, 2016/09/15 01:41:12]

Could you use "id" attribute and |getElementById()| rather than cascading
|firstChild()|?

+    Position end(div->lastChild(), 4);
+    EXPECT_EQ("foo bar", plainText(EphemeralRange(start, end), TextIteratorEmitsImageAltText));
+}
+
 } // namespace blink