Move the dom directory from web-platform-tests/ to wpt/.

third_party/WebKit/LayoutTests/imported/wpt/dom/nodes/selectors.js

 // Bit-mapped flags to indicate which tests the selector is suitable for
 var TEST_QSA              = 0x01; // querySelector() and querySelectorAll() tests
 var TEST_FIND             = 0x04; // find() and findAll() tests, may be unsuitable for querySelector[All]
 var TEST_MATCH            = 0x10; // matches() tests
 
 /*
  * All of these invalid selectors should result in a SyntaxError being thrown by the APIs.
  *
  *   name:     A descriptive name of the selector being tested
  *   selector: The selector to test
@@ skipping 697 matching lines @@
   {name: "General sibling combinator, whitespace after (1)",                                                            selector: "#sibling-p2~\t\r\n#sibling-p3",                            ctx: "", expect: ["sibling-p3"],                   level: 3, testType: TEST_FIND | TEST_MATCH},
   {name: "General sibling combinator, whitespace before (1)",                                                           selector: "#sibling-p2\t\r\n~#sibling-p3",                            ctx: "", expect: ["sibling-p3"],                   level: 3, testType: TEST_FIND | TEST_MATCH},
   {name: "General sibling combinator, no whitespace (1)",                                                               selector: "#sibling-p2~#sibling-p3",                                  ctx: "", expect: ["sibling-p3"],                   level: 3, testType: TEST_FIND | TEST_MATCH},
 
   // Group of selectors (comma)
   {name: "Syntax, group of selectors separator, surrounded by whitespace (1)", selector: "#group em\t\r \n,\t\r \n#group strong", ctx: "", expect: ["group-em1", "group-strong1"], level: 1, testType: TEST_FIND | TEST_MATCH},
   {name: "Syntax, group of selectors separator, whitespace after (1)",         selector: "#group em,\t\r\n#group strong",         ctx: "", expect: ["group-em1", "group-strong1"], level: 1, testType: TEST_FIND | TEST_MATCH},
   {name: "Syntax, group of selectors separator, whitespace before (1)",        selector: "#group em\t\r\n,#group strong",         ctx: "", expect: ["group-em1", "group-strong1"], level: 1, testType: TEST_FIND | TEST_MATCH},
   {name: "Syntax, group of selectors separator, no whitespace (1)",            selector: "#group em,#group strong",               ctx: "", expect: ["group-em1", "group-strong1"], level: 1, testType: TEST_FIND | TEST_MATCH},
 ];