adding preabandon flag to DM
BUG=skia:
Review URL: https://codereview.chromium.org/929243004
diff --git a/tools/flags/SkCommonFlags.cpp b/tools/flags/SkCommonFlags.cpp
index fa54a18..d05f764 100644
--- a/tools/flags/SkCommonFlags.cpp
+++ b/tools/flags/SkCommonFlags.cpp
@@ -39,6 +39,8 @@
DEFINE_bool2(quiet, q, false, "if true, don't print status updates.");
+DEFINE_bool(preAbandonGpuContext, false, "Abandons the GrContext before running the test.");
+
DEFINE_bool(abandonGpuContext, false, "Abandon the GrContext after running each test.");
DEFINE_string(skps, "skps", "Directory to read skps from.");