Revert of Experimental CL to stop using subdata

src/gpu/gl/GrGLBufferImpl.cpp

Index: src/gpu/gl/GrGLBufferImpl.cpp
diff --git a/src/gpu/gl/GrGLBufferImpl.cpp b/src/gpu/gl/GrGLBufferImpl.cpp
index becc55ae6993dd61c5892b30615b0faf3461dfe0..6cbf4e0d0eca4dde0274b31c3624a203f972cd9e 100644
--- a/src/gpu/gl/GrGLBufferImpl.cpp
+++ b/src/gpu/gl/GrGLBufferImpl.cpp
@@ -99,7 +99,11 @@
     }
     gpu->bufferData(fDesc.fID, fBufferType, fDesc.fDynamic, fDesc.fSizeInBytes, src,
                     srcSizeInBytes);
+#if GR_GL_USE_BUFFER_DATA_NULL_HINT
+    fGLSizeInBytes = fDesc.fSizeInBytes;
+#else
     fGLSizeInBytes = srcSizeInBytes;
+#endif
     VALIDATE();
     return true;
 }