Update Chromium and WebKit code to upstream.
[API] App.Quit should be App.quit.
[API][Mac] Implement window menu.
[Mac] Dynamically build application menu instead of using xib. Fix #115.
[API][GTK] Implement window menu.
[API][Win] Implement window menu.

This commit relies on:
zcbenz/chromium@7292311d43
zcbenz/chromium@b9bc2fdaa9
zcbenz/chromium@47be29f2d5
[Win] Make window response to menu commands.

This commit relies on:
zcbenz/chromium@fd7ef38
zcbenz/chromium@f427ff9
Remove the webkit patch.

Now we have a Webkit repo to log the development:
https://github.com/rogerwang/WebKit_trimmed
Merge branch 'master' of https://github.com/rogerwang/node-webkit
Always use native frame.  Fix #121.
Merge branch 'master' of https://github.com/rogerwang/node-webkit
Devtools button should reuse previous opened devtools window.

Fix #109.
[API] Add App.argv, make app aware of command line arguments.

Part of fixes for #61.
Close corresponding devtools window the window is closed.
[API] Add App.closeAllWindows(). Part of #141.
[Mac] The "Quit" menu item closes all windows instead of directly quit.

Fix #141.
Close devtools window instead of directly delete.
[API] Add 'open' event for App.
[Mac][API] Double click in Finder or use 'open' command to open files will send 'open' event to standalone apps.
Make browser aware of other instances. Part of both #61 and #64.

Relying on zcbenz/chromium@e39ee1a.