Update do not track IDL to correctly return null when a null string is returned

BUG=230363
TEST=not returning null breaks the browser_test DoNotTrackTest.DOMProperty

Review URL: https://codereview.chromium.org/13932004

git-svn-id: svn://svn.chromium.org/blink/trunk@148263 bbb929c8-8fbe-4397-9dbb-9b2b20218538
Revert 148223 "Introduce bindings.gyp"

> Introduce bindings.gyp
> 
> This CL moves the responsibility for building the bindings
> from WebCore.gyp to bindings.gyp. The bindings.gyp file
> contains a bunch of redundant declarations with WebCore.gyp.
> After this patch lands, the next step will be to refactor
> these declarations into a place where they can be shared.
> 
> BUG=230253
> 
> Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=148156
> 
> Review URL: https://chromiumcodereview.appspot.com/14110002

TBR=abarth@chromium.org
Review URL: https://codereview.chromium.org/13844004

git-svn-id: svn://svn.chromium.org/blink/trunk@148264 bbb929c8-8fbe-4397-9dbb-9b2b20218538
DevTools: [CPUProfile] Provide a way to show profile with particular time range selected in FlameChart.

DriveBy fixes:
make flameChart a private field.
fix profile url regexp.

BUG=none
TEST=none
R=yurys@chromium.org, pfeldman@chromium.org

Review URL: https://codereview.chromium.org/13800007

git-svn-id: svn://svn.chromium.org/blink/trunk@148265 bbb929c8-8fbe-4397-9dbb-9b2b20218538