Make makeSearchRange() in VisibleSelection to handle BeforeAnchor and AfterAnchor position type

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

Index: third_party/WebKit/Source/core/editing/VisibleSelectionTest.cpp
diff --git a/third_party/WebKit/Source/core/editing/VisibleSelectionTest.cpp b/third_party/WebKit/Source/core/editing/VisibleSelectionTest.cpp
index e0c1ebccd012d0dfb37624b74ba9f51157e18f4b..ac210fca7cc0e2abceb87eafa4f1d960801a1b12 100644
--- a/third_party/WebKit/Source/core/editing/VisibleSelectionTest.cpp
+++ b/third_party/WebKit/Source/core/editing/VisibleSelectionTest.cpp
@@ -70,6 +70,26 @@ VisibleSelectionTemplate<Strategy> expandUsingGranularity(
           .build());
 }
 
+// For http://crbug.com/700368
+TEST_F(VisibleSelectionTest, appendTrailingWhitespaceWithAfterAnchor) {
+  setBodyContent(
+      "<input type=checkbox>"
+      "<div style='user-select:none'>abc</div>");
+  Element* const input = document().querySelector("input");
+
+  // Simulate double-clicking "abc"

[yoichio, 2017/03/15 04:49:29]

double-clicking on user-select:none should not select anything.
Could you modify comment more exactly?

[yosin_UTC9, 2017/03/15 05:34:26]

No, this is current behavior and the test case provided by bug. We compute
unused selection when double-click on user-select:none.
I filed [1] to avoid unused computation of selection in
SelectionController::selectClosestWordFromHitTestResult

[1] http://crbug.com/701657
⚐	SelectionController::selectClosestWordFromHitTestResult should check
user-select:none at beginning of function

+  VisibleSelection selection =
+      createVisibleSelection(SelectionInDOMTree::Builder()
+                                 .collapse(Position::beforeNode(input))
+                                 .extend(Position::afterNode(input))
+                                 .setGranularity(WordGranularity)
+                                 .build());
+  selection.appendTrailingWhitespace();
+
+  EXPECT_EQ(Position::beforeNode(input), selection.start());
+  EXPECT_EQ(Position::afterNode(input), selection.end());
+}
+
 TEST_F(VisibleSelectionTest, expandUsingGranularity) {
   const char* bodyContent =
       "<span id=host><a id=one>1</a><a id=two>22</a></span>";