Add gin/gin.gyp:gin_shell into chromium_builder_dbg_drmemory_win build target

for running gin_unittests GinShellTest.HelloWorld on Dr.Memory bots.

NOTRY=true
TBR=hansmuller@chromium.org
BUG=398549
TEST=manual

Review URL: https://codereview.chromium.org/424463004

git-svn-id: http://src.chromium.org/svn/trunk/src/build@286933 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

all.gyp

@@ -1075,6 +1075,7 @@
             '../crypto/crypto.gyp:crypto_unittests',
             '../device/device_tests.gyp:device_unittests',
             '../extensions/extensions.gyp:extensions_unittests',
+            '../gin/gin.gyp:gin_shell',
             '../gin/gin.gyp:gin_unittests',
             '../google_apis/gcm/gcm.gyp:gcm_unit_tests',
             '../google_apis/google_apis.gyp:google_apis_unittests',