Remove GrGLProcessor and create GrGLSLTextureSampler class.

src/gpu/gl/GrGLProgram.h

Index: src/gpu/gl/GrGLProgram.h
diff --git a/src/gpu/gl/GrGLProgram.h b/src/gpu/gl/GrGLProgram.h
index dc64a70d26de27f92fefa3c3504aef80317e56f4..117d5a2a533d152615e38961ff12a9c37b311bda 100644
--- a/src/gpu/gl/GrGLProgram.h
+++ b/src/gpu/gl/GrGLProgram.h
@@ -20,7 +20,6 @@
 
 #include "builders/GrGLProgramBuilder.h"
 
-class GrGLProcessor;
 class GrGLInstalledProcessors;
 class GrGLProgramBuilder;
 class GrPipeline;
@@ -89,7 +88,7 @@ public:
     };
 
     /**
-     * This function uploads uniforms, calls each GrGLProcessor's setData, and retrieves the
+     * This function uploads uniforms, calls each GrGL*Processor's setData, and retrieves the
      * textures that need to be bound on each unit. It is the caller's responsibility to ensure
      * the program is bound before calling, and to bind the outgoing textures to their respective
      * units upon return. (Each index in the array corresponds to its matching GL texture unit.)