commit 7481ebffc2d5d6a039781f96f09485950acc51ed
author brettw <brettw@chromium.org> Mon Jun 29 16:00:15 2015 -0700
committer Commit bot <commit-bot@chromium.org> Mon Jun 29 23:01:02 2015 +0000
tree f87d61e54b960198e6ef0fddd91dba49d4b8fb7e
parent 8eeaed24e8dbbd4b85a075e784340e16021f5c7f

Windows precompiled header support in GN.

Introduces aprecompiled_header_type flag on a tool to say whether it supports precompiled headers, and flags on configs/targets that allow one to specify which header is precompiled.

This does not implement GCC precompiled headers, but the type flag will allow future expansion (the implementation will be mostly separate).

Renames SOURCE_CC to SOURCE_CPP to avoid confusion with Toolchain::TYPE_CC (which is actually the C compiler).

BUG=297678

Review URL: https://codereview.chromium.org/1207903002

Cr-Original-Commit-Position: refs/heads/master@{#336674}
Cr-Mirrored-From: https://chromium.googlesource.com/chromium/src
Cr-Mirrored-Commit: 3dab5fe87ddb0efe646f6ab393ab07533d75237d