Store GLSL max samplers using uint32_t rather than uint8_t

src/gpu/glsl/GrGLSLCaps.h

 /*
  * Copyright 2012 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 
 #ifndef GrGLSLCaps_DEFINED
 #define GrGLSLCaps_DEFINED
@@ skipping 196 matching lines @@
     const char* fSecondaryOutputExtensionString;
     const char* fExternalTextureExtensionString;
     const char* fTexelBufferExtensionString;
     const char* fNoPerspectiveInterpolationExtensionString;
     const char* fMultisampleInterpolationExtensionString;
     const char* fSampleVariablesExtensionString;
 
     const char* fFBFetchColorName;
     const char* fFBFetchExtensionString;
 
-    uint8_t fMaxVertexSamplers;
-    uint8_t fMaxGeometrySamplers;
-    uint8_t fMaxFragmentSamplers;
-    uint8_t fMaxCombinedSamplers;
+    uint32_t fMaxVertexSamplers;
+    uint32_t fMaxGeometrySamplers;
+    uint32_t fMaxFragmentSamplers;
+    uint32_t fMaxCombinedSamplers;
 
     AdvBlendEqInteraction fAdvBlendEqInteraction;
 
     GrSwizzle fConfigTextureSwizzle[kGrPixelConfigCnt];
     GrSwizzle fConfigOutputSwizzle[kGrPixelConfigCnt];
 
     uint8_t fSamplerPrecisions[(1 << kGrShaderTypeCount)][kGrPixelConfigCnt];
 
     friend class GrGLCaps;  // For initialization.
     friend class GrVkCaps;
 
     typedef GrShaderCaps INHERITED;
 };
 
 #endif