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/effects/GrSimpleTextureEffect.cpp b/src/gpu/effects/GrSimpleTextureEffect.cpp
index 0b03c99..9811155 100644
--- a/src/gpu/effects/GrSimpleTextureEffect.cpp
+++ b/src/gpu/effects/GrSimpleTextureEffect.cpp
@@ -36,12 +36,12 @@
     this->updateInvariantOutputForModulation(inout);
 }
 
-void GrSimpleTextureEffect::onGetGLProcessorKey(const GrGLSLCaps& caps,
-                                                GrProcessorKeyBuilder* b) const {
+void GrSimpleTextureEffect::onGetGLSLProcessorKey(const GrGLSLCaps& caps,
+                                                  GrProcessorKeyBuilder* b) const {
     GrGLSimpleTextureEffect::GenKey(*this, caps, b);
 }
 
-GrGLSLFragmentProcessor* GrSimpleTextureEffect::onCreateGLInstance() const  {
+GrGLSLFragmentProcessor* GrSimpleTextureEffect::onCreateGLSLInstance() const  {
     return new GrGLSimpleTextureEffect(*this);
 }