Reland "Move GrGeometryProcessor's textures out of classes and into"

This reverts commit fdf05f4ff4e96e28a31e210cb471d149d736f528.

Reason for revert: Android fixed after removing multitexture support from TextureOp.

Original change's description:
> Revert "Move GrGeometryProcessor's textures out of classes and into"
> 
> This reverts commit af87483873f0b370b90ebe956301a13cc8662cbe.
> 
> Revert "GrGeometryProcessor derives from GrNonAtomicRef not GrProgramElement."
> 
> This reverts commit 607be37e3d4ddbe2163c200d6e13bcee981f6bf7.
> 
> Revert "Store GrMeshDrawOps' meshes in GrOpFlushState's arena."
> 
> This reverts commit b948572c7862214fe2e1fa6cdfcab4fc7b1666ac.
> 
> Revert "Remove multitexturing support from GrTextureOp."
> 
> This reverts commit 986f64c601f3ed99f84f0c392d1a42e298f6d618.
> 
> Revert "Make result of GrOp::combineIfPossible be an enum."
> 
> This reverts commit 641ac7daa81cbfca06b310803fb1a607d0fc2b32.
> 
> Bug: b/112244393
> Change-Id: I579491a3f2f2f2093f1e2a6141fa1e4cc7b760a4
> Reviewed-on: https://skia-review.googlesource.com/145646
> Reviewed-by: Brian Salomon <bsalomon@google.com>
> Commit-Queue: Brian Salomon <bsalomon@google.com>

TBR=bsalomon@google.com

Change-Id: I1d41c2ecf7862e31fb025a7a00bb07bae9d83a47
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: b/112244393
Reviewed-on: https://skia-review.googlesource.com/145780
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
diff --git a/src/gpu/glsl/GrGLSLProgramBuilder.cpp b/src/gpu/glsl/GrGLSLProgramBuilder.cpp
index b0cf816..66e333a 100644
--- a/src/gpu/glsl/GrGLSLProgramBuilder.cpp
+++ b/src/gpu/glsl/GrGLSLProgramBuilder.cpp
@@ -101,9 +101,8 @@
         SkString name;
         name.printf("TextureSampler_%d", i);
         const auto& sampler = proc.textureSampler(i);
-        GrTextureType textureType = sampler.peekTexture()->texturePriv().textureType();
-        texSamplers[i] = this->emitSampler(textureType, sampler.peekTexture()->config(),
-                                           name.c_str(), sampler.visibility());
+        texSamplers[i] = this->emitSampler(sampler.textureType(), sampler.config(), name.c_str(),
+                                           sampler.visibility());
     }
 
     GrGLSLPrimitiveProcessor::FPCoordTransformHandler transformHandler(fPipeline,