dEQP: Move the DEPS dirs to mirror Chromium.

This avoid us needing to replicate gyp variables in both Chromium's
and ANGLE's common.gypi files.

BUG=angleproject:998

Change-Id: Iba1938fd37eb4bee28ae7daad31bf85a2d3bd692
Reviewed-on: https://chromium-review.googlesource.com/282145
Tested-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@google.com>
Reviewed-by: Kenneth Russell <kbr@chromium.org>
diff --git a/.gitignore b/.gitignore
index c734074..7730ea1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -24,9 +24,9 @@
 /third_party
 /src/tests/third_party/googlemock
 /src/tests/third_party/googletest
-/src/tests/third_party/libpng
-/src/tests/third_party/zlib
-/src/tests/third_party/deqp
+/third_party/libpng
+/third_party/zlib
+/third_party/deqp/src
 /src/tests/third_party/gles_conformance_tests
 out
 lib/*