Give an error when setting break points in functions either defined through t...

Give an error when setting break points in functions either defined through the API or in functions which are part of the V8 builtins.

BUG=178
Committed: http://code.google.com/p/v8/source/detail?r=977

[Christian Plesner Hansen, 2008-12-15 09:01:46]

Lgtm

http://codereview.chromium.org/13785/diff/1/2
File src/debug-delay.js (right):

http://codereview.chromium.org/13785/diff/1/2#newcode479
Line 479: throw new Error('Cannot set break point in native code.');
Given that all our code is native this error message might be confusing.

[Søren Thygesen Gjesse, 2008-12-15 09:29:50]

http://codereview.chromium.org/13785/diff/1/2
File src/debug-delay.js (right):

http://codereview.chromium.org/13785/diff/1/2#newcode479
Line 479: throw new Error('Cannot set break point in native code.');
On 2008/12/15 09:01:46, Christian Plesner Hansen wrote:
> Given that all our code is native this error message might be confusing.

I decided on the error message based on the "toString" for a n API function
returns [native code], e.g.

function print() { [native code] }

[Christian Plesner Hansen, 2008-12-15 09:35:29]

http://codereview.chromium.org/13785/diff/1/2
File src/debug-delay.js (right):

http://codereview.chromium.org/13785/diff/1/2#newcode479
Line 479: throw new Error('Cannot set break point in native code.');
Good point, let's stay consistent.  (I remember fighting against that toString
by the way.)