Add a target all_webkit that depends on the old all_webkit and content_shell

Add a target all_webkit that depends on the old all_webkit and content_shell

BUG=111316
R=abarth@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=199616

[jochen (gone - plz use gerrit), 2013-05-10 08:45:40]

plz review

[abarth-chromium, 2013-05-10 16:25:50]

https://codereview.chromium.org/14807005/diff/1/build/all.gyp
File build/all.gyp (right):

https://codereview.chromium.org/14807005/diff/1/build/all.gyp#newcode64
build/all.gyp:64: '../third_party/WebKit/Source/WebKit/chromium/TmpAll.gyp:*',
As discussed in the other CL, I'd prefer if we can make this:

'../third_party/WebKit/public/all.gyp:*',

Really I want '../blink/public/all.gyp:*', but that will need to wait.

https://codereview.chromium.org/14807005/diff/1/build/all.gyp#newcode189
build/all.gyp:189: 'target_name': 'all_webkit',
As mentioned in the other CL, in the long term, we want to remove the "webkit"
name from the codebase as we don't use WebKit anymore.  We don't necessarily
need to change this now, but "all_webkit" isn't the right name for this target
long-term.

[jochen (gone - plz use gerrit), 2013-05-10 19:23:22]

PTAL

[abarth-chromium, 2013-05-10 19:44:17]

LGTM

[jochen (gone - plz use gerrit), 2013-05-11 18:51:49]

Committed patchset #3 manually as r199616 (presubmit successful).