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/src/gpu/GrBackendTextureImageGenerator.cpp b/src/gpu/GrBackendTextureImageGenerator.cpp
index ae27912..af28409 100644
--- a/src/gpu/GrBackendTextureImageGenerator.cpp
+++ b/src/gpu/GrBackendTextureImageGenerator.cpp
@@ -186,8 +186,8 @@
         GrMipMapped mipMapped = willNeedMipMaps ? GrMipMapped::kYes : GrMipMapped::kNo;
 
         sk_sp<GrRenderTargetContext> rtContext(context->makeDeferredRenderTargetContext(
-                SkBackingFit::kExact, info.width(), info.height(), proxy->config(), nullptr,
-                0, mipMapped, proxy->origin(), nullptr, SkBudgeted::kYes));
+                SkBackingFit::kExact, info.width(), info.height(), proxy->config(), nullptr, 1,
+                mipMapped, proxy->origin(), nullptr, SkBudgeted::kYes));
 
         if (!rtContext) {
             return nullptr;