GrCustomStage Renaming Part 4

Rename a bunch of things found by searching for "custom".
Review URL: https://codereview.appspot.com/6765048

git-svn-id: http://skia.googlecode.com/svn/trunk@6085 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/GrEffect.cpp b/src/gpu/GrEffect.cpp
index 7997fb0..352d43c 100644
--- a/src/gpu/GrEffect.cpp
+++ b/src/gpu/GrEffect.cpp
@@ -19,7 +19,7 @@
 }
 #endif
 
-class GrCustomStage_Globals {
+class GrEffect_Globals {
 public:
     static GrMemoryPool* GetTLS() {
         return (GrMemoryPool*)SkTLS::Get(CreateTLS, DeleteTLS);
@@ -69,9 +69,9 @@
 }
 
 void * GrEffect::operator new(size_t size) {
-    return GrCustomStage_Globals::GetTLS()->allocate(size);
+    return GrEffect_Globals::GetTLS()->allocate(size);
 }
 
 void GrEffect::operator delete(void* target) {
-    GrCustomStage_Globals::GetTLS()->release(target);
+    GrEffect_Globals::GetTLS()->release(target);
 }