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/gm/texturedomaineffect.cpp b/gm/texturedomaineffect.cpp
index e314668..63e0111 100644
--- a/gm/texturedomaineffect.cpp
+++ b/gm/texturedomaineffect.cpp
@@ -89,7 +89,7 @@
         GrSurfaceDesc desc;
         desc.fWidth = fBmp.width();
         desc.fHeight = fBmp.height();
-        desc.fConfig = SkImageInfo2GrPixelConfig(fBmp.info(), *context->contextPriv().caps());
+        desc.fConfig = SkColorType2GrPixelConfig(fBmp.colorType());
         SkASSERT(kUnknown_GrPixelConfig != desc.fConfig);
 
         sk_sp<GrTextureProxy> proxy = proxyProvider->createTextureProxy(