Make GrBufferAccess a nested class of GrProcessor

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=4978

Change-Id: I08c24e9183108f4dd6068216488fd3ac9b5f3ec2
Reviewed-on: https://skia-review.googlesource.com/4978
Reviewed-by: Greg Daniel <egdaniel@google.com>
Commit-Queue: Brian Salomon <bsalomon@google.com>
diff --git a/src/gpu/glsl/GrGLSLFragmentProcessor.h b/src/gpu/glsl/GrGLSLFragmentProcessor.h
index 7add1eb..2189250 100644
--- a/src/gpu/glsl/GrGLSLFragmentProcessor.h
+++ b/src/gpu/glsl/GrGLSLFragmentProcessor.h
@@ -97,9 +97,9 @@
         @param texSamplers       Contains one entry for each TextureSampler  of the GrProcessor.
                                  These can be passed to the builder to emit texture reads in the
                                  generated code.
-        @param bufferSamplers    Contains one entry for each GrBufferAccess of the GrProcessor.
-                                 These can be passed to the builder to emit buffer reads in the
-                                 generated code.
+        @param bufferSamplers    Contains one entry for each BufferAccess of the GrProcessor. These
+                                 can be passed to the builder to emit buffer reads in the generated
+                                 code.
      */
     struct EmitArgs {
         EmitArgs(GrGLSLFPFragmentBuilder* fragBuilder,
diff --git a/src/gpu/glsl/GrGLSLProgramBuilder.cpp b/src/gpu/glsl/GrGLSLProgramBuilder.cpp
index c4c3e68..1e78788 100644
--- a/src/gpu/glsl/GrGLSLProgramBuilder.cpp
+++ b/src/gpu/glsl/GrGLSLProgramBuilder.cpp
@@ -264,7 +264,7 @@
         GrShaderFlags texelBufferVisibility = kNone_GrShaderFlags;
 
         for (int b = 0; b < numBuffers; ++b) {
-            const GrBufferAccess& access = processor.bufferAccess(b);
+            const GrProcessor::BufferAccess& access = processor.bufferAccess(b);
             name.printf("BufferSampler_%d", outBufferSamplers->count());
             this->emitSampler(kBufferSampler_GrSLType, access.texelConfig(), name.c_str(),
                               access.visibility(), outBufferSamplers);