[bindings] Club related constants for a runtime enabled flag in a single |if| block

[bindings] Club related constants for a runtime enabled flag in a single |if| block

For the same runtime enabled flag, the constant configuration installation should be
moved into a single |if| block instead of multiple blocks.

This patch also reduces the size of .text segment of 
libmodules.so by ~4k (component build on linux 64bit)

R=haraken

BUG=469961
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=201710

[vivekg, 2015-09-03 06:48:40]

vivekg@chromium.org changed reviewers:
+ vivekg@chromium.org

[vivekg, 2015-09-03 06:48:40]

PTAL, thanks.

Here is a diff of a small snippet of the generated code for
V8WebGL2RenderingContext.cpp before and after applying the patch.
https://www.diffnow.com/?report=1tx4d

[vivekg, 2015-09-03 06:49:38]

The CQ bit was checked by vivekg@chromium.org to run a CQ dry run

[commit-bot: I haz the power, 2015-09-03 06:49:49]

Dry run: CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1329653003/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1329653003/20001

[vivekg, 2015-09-03 06:50:13]

The CQ bit was unchecked by vivekg@chromium.org

[vivekg, 2015-09-03 07:03:27]

This patch also reduces the size of .text segment of libmodules.so by ~4k
(before and after)

text     data      bss   filename
6504065  409912    5640  lib/libmodules.so
6500183  409912    5640  lib/libmodules.so

[haraken, 2015-09-03 07:22:34]

LGTM

[vivekg, 2015-09-03 07:33:48]

The CQ bit was checked by vivekg@chromium.org

[commit-bot: I haz the power, 2015-09-03 07:33:51]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1329653003/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1329653003/20001

[commit-bot: I haz the power, 2015-09-03 08:06:23]

Committed patchset #2 (id:20001) as
https://src.chromium.org/viewvc/blink?view=rev&revision=201710