roll gyp 1927:1944

1928: use all processors instead of hard-coded 8.
1929: Fix msvs-ninja clean build command / target.
1930: ninja: Add option for link concurrency.
1931: Add unittest for 'AR' in 'make_global_settings'
1932: Override the user's language settings during tests
1933: ninja win: Remove old comment, check cc/cxx are always overridden
1934: Use context manager to manage OS environment in tests
1935: Teach Ninja generator about 'AR' in 'make_global_settings'
1936: First crack at adding a GYP_GENERATOR for determining various things
1937: Add unittest for 'LD' in 'make_global_settings'
1938: Remove unused parameters from test code.
1939: Revise unittest for 'LD' in 'make_global_settings'
1940: Revise unittest for 'AR' in 'make_global_settings'
1941: ninja: Read 'LD'/'LD.host' from 'make_global_settings_ld'.
1942: ninja: Read 'AR.host' from 'make_global_settings'.
1943: [gyp][Android] Implement TestGypAndroid.run_built_executable.
1944: ninja: Pass .so files outside of --start-group/--end-group.

BUG=362075,skia:2439,gyp:434
TBR=scottmg@chromium.org

Review URL: https://codereview.chromium.org/332683003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@278051 0039d316-1c4b-4281-b951-d872f2087c98

DEPS

@@ -151,7 +151,7 @@ deps = {
     (Var("googlecode_url") % "grit-i18n") + "/trunk@168",
 
   "src/tools/gyp":
-    (Var("googlecode_url") % "gyp") + "/trunk@1927",
+    (Var("googlecode_url") % "gyp") + "/trunk@1944",
 
   "src/tools/swarming_client":
     Var("chromium_git") + "/external/swarming.client.git@" +