Dest color space no longer impacts mipmaps or texture sampling

PS5: Removes SkDestinationSurfaceColorMode, tracking of mipmap
mode on GrTexture, sRGB decode state per-texture. Because we
were often choosing sRGB configs for RGB color types, legacy
rendering would then be incorrect (too dark). So...

PS7: Stops ever using sRGB pixel configs when translating
image info or color type. Also removes a bunch of GrCaps bits
and a GrContextOption that are no longer relevant.

PS9: Adjusts surface creation unit test expectations, and
changes the raster rules accordingly.

At this point, sRGB configs are (obviously) going to be broken.

Locally, I ran 8888, gl, and the gbr- versions of both. Across
all GMs x configs, there are 13 diffs. 12 are GMs that create
surfaces with a color-space attached (and thus, the offscreen
is no longer getting sRGB pixel config). The only remainder
constructs an SkPictureImageGenerator, (with an attached color
space) and renders it to the gbr-gl canvas, which triggers a
a tagged surface inside the generator.

Bug: skia:
Change-Id: Ie5edfa157dd799f3121e8173fc4f97f6c8ed6789
Reviewed-on: https://skia-review.googlesource.com/131282
Commit-Queue: Brian Osman <brianosman@google.com>
Reviewed-by: Mike Klein <mtklein@google.com>
Reviewed-by: Brian Salomon <bsalomon@google.com>
diff --git a/tests/MipMapTest.cpp b/tests/MipMapTest.cpp
index 7e0a653..938e7234 100644
--- a/tests/MipMapTest.cpp
+++ b/tests/MipMapTest.cpp
@@ -23,7 +23,7 @@
         int width = 1 + rand.nextU() % 1000;
         int height = 1 + rand.nextU() % 1000;
         make_bitmap(&bm, width, height);
-        sk_sp<SkMipMap> mm(SkMipMap::Build(bm, SkDestinationSurfaceColorMode::kLegacy, nullptr));
+        sk_sp<SkMipMap> mm(SkMipMap::Build(bm, nullptr));
 
         REPORTER_ASSERT(reporter, mm->countLevels() == SkMipMap::ComputeLevelCount(width, height));
         REPORTER_ASSERT(reporter, !mm->extractLevel(SkSize::Make(SK_Scalar1, SK_Scalar1),
@@ -60,7 +60,7 @@
     SkBitmap bm;
     bm.allocN32Pixels(width, height);
     bm.eraseColor(SK_ColorWHITE);
-    sk_sp<SkMipMap> mm(SkMipMap::Build(bm, SkDestinationSurfaceColorMode::kLegacy, nullptr));
+    sk_sp<SkMipMap> mm(SkMipMap::Build(bm, nullptr));
 
     const int mipLevelCount = mm->countLevels();
     REPORTER_ASSERT(reporter, mipLevelCount == expectedMipLevelCount);
@@ -90,7 +90,7 @@
         SkBitmap bm;
         bm.allocN32Pixels(1, 1);
         bm.eraseColor(SK_ColorWHITE);
-        sk_sp<SkMipMap> mm(SkMipMap::Build(bm, SkDestinationSurfaceColorMode::kLegacy, nullptr));
+        sk_sp<SkMipMap> mm(SkMipMap::Build(bm, nullptr));
 
         REPORTER_ASSERT(reporter, mm == nullptr);
     }