Wholesale move of debugger sources to content.

content/browser/debugger/manual_tests/debugger-step-on-while-statements.html

 <script src="resources/loop-statements.js"></script>
 <script>            
 function runWhile()
 {
     /* place breakpoint on next line and click continue */ debugger;
     while (condition()) {
         statement();
         increment();
     }
 }
 
 </script>
 <p>To test, open the DevTools (Ctrl+Shift+I) and reload the page.
 <br><br>
 Before running the tests please perform the following:
 Make sure the execution is not paused in the debugger.<br>
 Click the button and when the debugger breaks, set a breakpoint on the first line in the loop
 (as indicated by the comment), and click continue.<br>
 The debugger should stop at the beggining of the loop.<br>
 The above actions should be performed before <b>each</b> of the following tests.</p>
 <br><br>
 <input type="button" value="run while" onclick="initialize();runWhile()"/>
 <br><br>
 TEST 1: Click 'continue'. Execution should continue without stopping on the loop breakpoint again.<br>
 TEST 2: Click 'Step over'. Debugger should step inside the loop to the next statement line.<br>
 TEST 3: Click 'Step into'. Debugger should step into 'condition' function.<br>
 step over to the beggingin of the while loop again. Click 'Step into'. Debugger should step into
 the 'condition' function.<br>