Revert of Experimental CL to stop using subdata

src/gpu/gl/GrGLBufferImpl.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "GrGLBufferImpl.h"
 #include "GrGLGpu.h"
 
@@ skipping 81 matching lines @@
     VALIDATE();
     if (srcSizeInBytes > fDesc.fSizeInBytes) {
         return false;
     }
     if (0 == fDesc.fID) {
         memcpy(fCPUData, src, srcSizeInBytes);
         return true;
     }
     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;
 }
 
 void GrGLBufferImpl::validate() const {
     SkASSERT(GR_GL_ARRAY_BUFFER == fBufferType || GR_GL_ELEMENT_ARRAY_BUFFER == fBufferType);
     // The following assert isn't valid when the buffer has been abandoned:
     // SkASSERT((0 == fDesc.fID) == (fCPUData));
     SkASSERT(nullptr == fCPUData || 0 == fGLSizeInBytes);
     SkASSERT(nullptr == fMapPtr || fCPUData || fGLSizeInBytes <= fDesc.fSizeInBytes);
     SkASSERT(nullptr == fCPUData || nullptr == fMapPtr || fCPUData == fMapPtr);
 }