Revert "Revert "Revert "Revert "Redefine the meaning of sample counts in GPU backend.""""

This reverts commit 18c52a7b52211de5d0dcd86dc048adef758c6c75.

Also relands "More sample count cleanup:" and "Add new GrContext queries for imagability, surfacability, and max sample count of color types"


Bug: skia:
Change-Id: I4028105a3a1f16ce3944e134619eb6245af6b947
Reviewed-on: https://skia-review.googlesource.com/102940
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
diff --git a/tools/flags/SkCommonFlagsConfig.cpp b/tools/flags/SkCommonFlagsConfig.cpp
index d38d70a..9d1c2dd 100644
--- a/tools/flags/SkCommonFlagsConfig.cpp
+++ b/tools/flags/SkCommonFlagsConfig.cpp
@@ -391,7 +391,7 @@
     bool seenUseDIText =false;
     bool useDIText = false;
     bool seenSamples = false;
-    int samples = 0;
+    int samples = 1;
     bool seenColor = false;
     SkColorType colorType = kRGBA_8888_SkColorType;
     SkAlphaType alphaType = kPremul_SkAlphaType;