Restore a collapsed leading space of text used for line break

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

Index: third_party/WebKit/Source/core/editing/FrameSelectionTest.cpp
diff --git a/third_party/WebKit/Source/core/editing/FrameSelectionTest.cpp b/third_party/WebKit/Source/core/editing/FrameSelectionTest.cpp
index df17dbbf1cbd4e0a5979f2568a9d4cdd09b05939..aa19ada0f7a6e4c73ed49b2955879287e1f9dd92 100644
--- a/third_party/WebKit/Source/core/editing/FrameSelectionTest.cpp
+++ b/third_party/WebKit/Source/core/editing/FrameSelectionTest.cpp
@@ -211,6 +211,22 @@ TEST_F(FrameSelectionTest, ModifyExtendWithFlatTree)
     EXPECT_EQ(PositionInFlatTree(two, 3), visibleSelectionInFlatTree().end());
 }
 
+TEST_F(FrameSelectionTest, PreserveLeadingSpaceWhenCopySelection)
+{
+    setBodyContent("<div id='sample' style='width: 2em;'><b><i>foo</i></b> bar</div>");
+    Element* sample = document().getElementById("sample");
+    VisibleSelection validSelection(Position(sample->firstChild()->firstChild()->firstChild(), 0), Position(sample->lastChild(), 4));

[yosin_UTC9, 2016/09/14 05:13:52]

Please use |plainText()| instead of |FrameSelection::selectedHTMLForClipboard()|
which calls |plainText()| in |StyledMarkupAccumulator::renderedText()| to narrow
test target.

[joone, 2016/09/14 07:09:13]

Done.

+    setSelection(validSelection);
+    EXPECT_EQ("<b style=\"color: rgb(0, 0, 0); font-family: &quot;&quot;; font-size: medium; font-style: normal; font-variant-ligatures: normal; "
+        "font-variant-caps: normal; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; white-space: "
+        "normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial;\">"
+        "<i>foo</i></b><span style=\"color: rgb(0, 0, 0); font-family: &quot;&quot;; font-size: medium; font-style: normal; font-variant-ligatures: "
+        "normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: 2; text-align: start; text-indent: 0px; text-transform: none; "
+        "white-space: normal; widows: 2; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration-style: initial; text-decoration-color: initial; "
+        "display: inline !important; float: none;\"><span class=\"Apple-converted-space\">\xC2\xA0</span>bar</span>", WebString(selection().selectedHTMLForClipboard()).utf8())
+        << "The markup of the selection is different";
+}
+
 TEST_F(FrameSelectionTest, ModifyWithUserTriggered)
 {
     setBodyContent("<div id=sample>abc</div>");