Roll src\tools\gyp eb296f67d..d61a9397e (9 commits)

https://chromium.googlesource.com/external/gyp.git/+log/eb296f67da07..d61a9397e668

$ git log eb296f67d..d61a9397e --date=short --no-merges --format='%ad %ae %s'
2017-06-27 mblsha mac_tool.py: Handle non-zero ibtool return code.
2017-04-25 refack win: mkdir even when copying directory
2017-04-24 mark win ninja/make: Always use a native compiler executable with MSVS 2017
2017-04-24 mark Fix MSVC++ 32-on-32 builds after b62d04ff85e6
2017-04-24 dpranke Disable flaky test/copies/gyptest-all under msvs.
2017-04-24 refack win,ninja: ninja generator better on windows
2017-04-24 dpranke Clean up gyptest.py.
2017-04-21 dpranke Disable a bunch of tests on Mac.
2017-04-18 dpranke Update test/no-cpp/gyptest-no-cpp.

In order to support building clang with a locally installed copy of VC++
2017 using gn we need the latest version of tools\gyp.

BUG=683729

Change-Id: Id3420b00667f89b7eb33aa2227f2e8fdb8de180d
Reviewed-on: https://chromium-review.googlesource.com/579892
Commit-Queue: Bruce Dawson <brucedawson@chromium.org>
Reviewed-by: Nico Weber <thakis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#488701}

DEPS

@@ -169,7 +169,7 @@ deps = {
     Var('chromium_git') + '/external/github.com/google/snappy.git' + '@' + '513df5fb5a2d51146f409141f9eb8736935cc486',
 
   'src/tools/gyp':
-    Var('chromium_git') + '/external/gyp.git' + '@' + 'eb296f67da078ec01f5e3a9ea9cdc6d26d680161',
+    Var('chromium_git') + '/external/gyp.git' + '@' + 'd61a9397e668fa9843c4aa7da9e79460fe590bfb',
 
   'src/tools/swarming_client':
     Var('chromium_git') + '/external/swarming.client.git' + '@' +  Var('swarming_revision'),