Rename some processor functions from GL to GLSL

TBR=bsalomon@google.com

BUG=skia:

Review URL: https://codereview.chromium.org/1443743002
diff --git a/src/gpu/GrPrimitiveProcessor.h b/src/gpu/GrPrimitiveProcessor.h
index e15d2da..46136f0 100644
--- a/src/gpu/GrPrimitiveProcessor.h
+++ b/src/gpu/GrPrimitiveProcessor.h
@@ -190,14 +190,14 @@
      *
      * TODO: A better name for this function  would be "compute" instead of "get".
      */
-    virtual void getGLProcessorKey(const GrGLSLCaps& caps,
-                                   GrProcessorKeyBuilder* b) const = 0;
+    virtual void getGLSLProcessorKey(const GrGLSLCaps& caps,
+                                     GrProcessorKeyBuilder* b) const = 0;
 
 
     /** Returns a new instance of the appropriate *GL* implementation class
         for the given GrProcessor; caller is responsible for deleting
         the object. */
-    virtual GrGLSLPrimitiveProcessor* createGLInstance(const GrGLSLCaps& caps) const = 0;
+    virtual GrGLSLPrimitiveProcessor* createGLSLInstance(const GrGLSLCaps& caps) const = 0;
 
     bool isPathRendering() const { return fIsPathRendering; }