Selection API: Do not change focus by Selection functions.

third_party/WebKit/LayoutTests/fast/events/script-tests/event-input-contentEditable.js

 description("This tests that the input events are dispatched when contentEditable nodes are edited");
 
 var actualInputEventCount = 0;
 var expectedInputEventCount = 0;
 
 function fired(evt, expectedId, expectedText)
 {
     actualInputEventCount++;
     shouldBe("event.target.id", "'" + expectedId + "'");
     shouldBe("event.target.innerHTML", "'" + expectedText + "'");
@@ skipping 67 matching lines @@
 target6parent.addEventListener("input", function(evt) { fired(evt, "target6parent", expectedText6); });
 expectedInputEventCount++;
 target6start.addEventListener("input", function(evt) { testFailed("should not be reached"); });
 target6end.addEventListener("input", function(evt) { testFailed("should not be reached"); });
 target6middle.addEventListener("input", function(evt) { fired(evt, "target6end", ""); });
 sel.selectAllChildren(target6parent);
 document.execCommand("createLink", false, "http://www.example.com/");
 
 // Ensure key events can cause the event 
 var target7 = setupForFiringTest('<p id="target7" contentEditable>Replaced</p>', "X");
+target7.focus();
 sel.selectAllChildren(target7);
 eventSender.keyDown('X');
 
 var target8 = setupForFiringTest('<p id="target8" contentEditable>Deleted</p>', '');
 sel.selectAllChildren(target8);
 eventSender.keyDown('Delete');
 
 var target9parent = makeTestTarget('<div id="target9parent" contenteditable><div id="target9child" contenteditable>foo</div></div>');
 var target9child = document.getElementById('target9child');
 target9child.addEventListener("input", function(evt) { testFailed("should not be reached"); });
 target9parent.addEventListener("input", function(evt) { fired(evt, target9parent.id, '<div id="target9child" contenteditable="">Replacing</div>'); });
 sel.selectAllChildren(target9child);
 document.execCommand("insertText", false, "Replacing");
 expectedInputEventCount++;
 
 var target10parent = makeTestTarget('<div id="t10parent" contenteditable><div id="t10child" contenteditable=false><div id="t10gch" contenteditable>foo</div></div></div>');
 var target10child = document.getElementById("t10child");
 var target10gch = document.getElementById("t10gch");
 target10gch.addEventListener("input", function(evt) { fired(evt, target10gch.id, 'Replacing'); });
 sel.selectAllChildren(target10gch);
 document.execCommand("insertText", false, "Replacing");
 expectedInputEventCount++;
 
 shouldBe("expectedInputEventCount", "actualInputEventCount");
 clearTestTarget();