DevTools: Show internal properties in object preview in console.

LayoutTests/inspector/console/console-format-expected.txt

 CONSOLE MESSAGE: line 26: test,test2,,,test4,,,,,
 CONSOLE MESSAGE: line 27: %o
 CONSOLE MESSAGE: line 28: %O
 CONSOLE MESSAGE: line 29: Test for zero "%f" in formatter
 CONSOLE MESSAGE: line 30: %% self-escape1
 CONSOLE MESSAGE: line 31: %%s self-escape2
 CONSOLE MESSAGE: line 32: %%ss self-escape3
 CONSOLE MESSAGE: line 33: %%s%s%%s self-escape4
 CONSOLE MESSAGE: line 34: %%%%% self-escape5
 CONSOLE MESSAGE: line 35: %%%s self-escape6
@@ skipping 56 matching lines @@
 CONSOLE MESSAGE: line 12: 0
 CONSOLE MESSAGE: line 13: 0
 CONSOLE MESSAGE: line 12: 
 CONSOLE MESSAGE: line 13: 
 CONSOLE MESSAGE: line 12: function Object() { [native code] }
 CONSOLE MESSAGE: line 13: function Object() { [native code] }
 CONSOLE MESSAGE: line 12: [object Object]
 CONSOLE MESSAGE: line 13: [object Object]
 CONSOLE MESSAGE: line 12: function () {}
 CONSOLE MESSAGE: line 13: function () {}
+CONSOLE MESSAGE: line 12: 42
+CONSOLE MESSAGE: line 13: 42
+CONSOLE MESSAGE: line 12: abc
+CONSOLE MESSAGE: line 13: abc
 Tests that console logging dumps proper messages.
 
  Array[10]0: "test"1: "test2"4: "test4"foo: Objectlength: 10__proto__: Array[0] console-format.html:26
 Array[10]0: "test"1: "test2"4: "test4"foo: Objectlength: 10__proto__: Array[0] console-format.html:27
 Array[10]0: "test"1: "test2"4: "test4"foo: Objectlength: 10__proto__: Array[0] console-format.html:28
 Test for zero "0" in formatter console-format.html:29
 % self-escape1 dummy console-format.html:30
 %s self-escape2 dummy console-format.html:31
 %ss self-escape3 dummy console-format.html:32
 %sdummy%s self-escape4 console-format.html:33
@@ skipping 120 matching lines @@
 globals[28]
 function Object() { [native code] }
 Object {} console-format.html:12
 [Object]0: Objectlength: 1__proto__: Array[0] console-format.html:13
 globals[29]
 Object {}
 function () {} console-format.html:12
 [function]0: function () {}length: 1__proto__: Array[0] console-format.html:13
 globals[30]
 function () {} console-format.html:62
+Number {[[PrimitiveValue]]: 42} console-format.html:12
+[Number]0: Numberlength: 1__proto__: Array[0] console-format.html:13
+globals[31]
+Number {[[PrimitiveValue]]: 42}
+String {0: "a", 1: "b", 2: "c", length: 3, [[PrimitiveValue]]: "abc"} console-format.html:12
+[String]0: Stringlength: 1__proto__: Array[0] console-format.html:13
+globals[32]
+String {0: "a", 1: "b", 2: "c", length: 3, [[PrimitiveValue]]: "abc"}