commit eb7e5dc02dfff9e4009a50754e53d77b0b8c8b92
author tfarina <tfarina@chromium.org> Mon Mar 23 11:34:19 2015 -0700
committer Commit bot <commit-bot@chromium.org> Mon Mar 23 18:35:10 2015 +0000
tree bde74fad3f99684001f5553770c9ebc7b4f0c541
parent 9a28275775aa27f8afcf428f861c672717f679b9

tools/gn: Give a better informative message if user uses apostrophe.

Since most most gn users come from gyp and that apostrophe
works as a string delimiter in both gyp and python, it is pretty common
that they use an apostrophe (') instead of a double one (").

So lets try to give them a more helpful error message that could save people
some time the first time.

BUG=469097
TEST=edit any BUILD.gn and change any " by '. regenerate the ninja files
by running gn gen out-gn. See the error message.
R=brettw@chromium.org

Review URL: https://codereview.chromium.org/1024333002

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Cr-Mirrored-Commit: dd495008e9a6652a7147d91fe3bdf52c5325de55