DevTools: rename debugger/ to devtools/, move DevTools files into content/renderer/devtools.

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

-<script src="resources/loop-statements.js"></script>
-<script>            
-function runDoWhile()
-{
-    /* place breakpoint on next line and click continue */ debugger;
-    do {
-        statement();
-        increment();
-    } while (condition());
-}
-
-</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 do-while" onclick="initialize();runDoWhile()"/>
-<br><br>
-TEST 1: Click 'continue'. Execution should continue without stopping on the loop breakpoint again.<br>
-TEST 2: Click 'Step into'. Debugger should step inside each function.<br>
-TEST 3: 'Step over' to the end of the loop (and 'while' statement) and step over again. Debugger
-should go to the beggining of the loop.<br>