Move Google3-specific stack limitation logic to template classes.

Remove #ifdefs in other files.

Reapplies https://codereview.chromium.org/1656143003; removing the implicit constructors for GLPtr and GLPtrAlias resolves the build issue on Android.

Also reverts https://codereview.chromium.org/1663013004

Does not change the public API.

TBR=reed
GOLD_TRYBOT_URL= https://gold.skia.org/search2?unt=true&query=source_type%3Dgm&master=false&issue=1666203002

Review URL: https://codereview.chromium.org/1666203002

1 files changed, 4 insertions, 2 deletions

diff --git a/include/gpu/gl/GrGLInterface.h b/include/gpu/gl/GrGLInterface.h
index 31429a8ebc..5fa31eda94 100644
--- a/include/gpu/gl/GrGLInterface.h
+++ b/include/gpu/gl/GrGLInterface.h
@@ -109,7 +109,8 @@ private:
     template <typename FNPTR_TYPE> class GLPtr {
     public:
         GLPtr() : fPtr(NULL) {}
-        GLPtr operator=(FNPTR_TYPE ptr) { fPtr = ptr; return *this; }
+        GLPtr(const GLPtr&) = delete;
+        GLPtr& operator=(FNPTR_TYPE ptr) { fPtr = ptr; return *this; }
         operator FNPTR_TYPE() const { return fPtr; }
     private:
         FNPTR_TYPE fPtr;
@@ -119,7 +120,8 @@ private:
     // they're updated to use the Functions struct.
     template <typename FNPTR_TYPE> class GLPtrAlias {
     public:
-        GLPtrAlias(GLPtr<FNPTR_TYPE>* base) : fBase(base) {}
+        explicit GLPtrAlias(GLPtr<FNPTR_TYPE>* base) : fBase(base) {}
+        GLPtrAlias(const GLPtrAlias&) = delete;
         void operator=(FNPTR_TYPE ptr) { *fBase = ptr; }
     private:
         GLPtr<FNPTR_TYPE>* fBase;