Move SkGLContext and some GrGLInterface implementations to skgputest module

tests/TestTest.cpp

Index: tests/TestTest.cpp
diff --git a/tests/TestTest.cpp b/tests/TestTest.cpp
index 890042e19d6c3249956cbd2887dd5bac615d1806..05ab9ff69719785ae4ea0663784dda3b08c37dda 100644
--- a/tests/TestTest.cpp
+++ b/tests/TestTest.cpp
@@ -9,7 +9,7 @@
 
 #if SK_SUPPORT_GPU
 #include "GrContext.h"
-#include "gl/SkGLContext.h"
+#include "gl/GLContext.h"
 #endif
 
 
@@ -64,7 +64,7 @@ DEF_GPUTEST_FOR_NULL_CONTEXT(TestGpuNullContext, reporter, context) {
 #endif
 
 // This is an example of a GPU test that tests a property that should work for all GPU contexts.
-// It uses the additional SkGLContext* glContext to implement the test.
+// It uses the additional GLContext* glContext to implement the test.
 #if SK_SUPPORT_GPU
 DEF_GPUTEST_FOR_ALL_CONTEXTS(TestGpuGrContextAndGLContext, reporter, context, glContext) {
     REPORTER_ASSERT(reporter, reporter);