Move SkGLContext and some GrGLInterface implementations to skgputest module

tools/gpu/gl/iOS/CreatePlatformGLContext_iOS.mm

Index: tools/gpu/gl/iOS/CreatePlatformGLContext_iOS.mm
diff --git a/src/gpu/gl/iOS/SkCreatePlatformGLContext_iOS.mm b/tools/gpu/gl/iOS/CreatePlatformGLContext_iOS.mm
similarity index 89%
rename from src/gpu/gl/iOS/SkCreatePlatformGLContext_iOS.mm
rename to tools/gpu/gl/iOS/CreatePlatformGLContext_iOS.mm
index 54dc59af03462989f79973111b644132eb96c6ba..d6507f280facb14f88aae857aabb99584a996157 100644
--- a/src/gpu/gl/iOS/SkCreatePlatformGLContext_iOS.mm
+++ b/tools/gpu/gl/iOS/CreatePlatformGLContext_iOS.mm
@@ -6,7 +6,7 @@
  * found in the LICENSE file.
  */
 
-#include "gl/SkGLContext.h"
+#include "GLContext.h"
 #import <OpenGLES/EAGL.h>
 #include <dlfcn.h>
 
@@ -14,7 +14,7 @@
 
 namespace {
 
-class IOSGLContext : public SkGLContext {
+class IOSGLContext : public sk_gpu_test::GLContext {
 public:
     IOSGLContext();
     ~IOSGLContext() override;
@@ -87,9 +87,10 @@ GrGLFuncPtr IOSGLContext::onPlatformGetProcAddress(const char* procName) const {
     return reinterpret_cast<GrGLFuncPtr>(dlsym(fGLLibrary, procName));
 }
 
-} // anonymous namespace
+}  // anonymous namespace
 
-SkGLContext* SkCreatePlatformGLContext(GrGLStandard forcedGpuAPI, SkGLContext* shareContext) {
+namespace sk_gpu_test {
+GLContext *CreatePlatformGLContext(GrGLStandard forcedGpuAPI, GLContext *shareContext) {
     SkASSERT(!shareContext);
     if (shareContext) {
         return NULL;
@@ -97,10 +98,11 @@ SkGLContext* SkCreatePlatformGLContext(GrGLStandard forcedGpuAPI, SkGLContext* s
     if (kGL_GrGLStandard == forcedGpuAPI) {
         return NULL;
     }
-    IOSGLContext* ctx = new IOSGLContext;
+    IOSGLContext *ctx = new IOSGLContext;
     if (!ctx->isValid()) {
         delete ctx;
         return NULL;
     }
     return ctx;
 }
+}