Simplify path allocation, clean up resources correctly

src/gpu/gl/GrGLPathRendering.h

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrGLPathRendering_DEFINED
 #define GrGLPathRendering_DEFINED
 
@@ skipping 93 matching lines @@
                 combined.setAll(SkIntToScalar(2) / fRenderTargetSize.fWidth, 0, -SK_Scalar1,
                                 0, SkIntToScalar(2) / fRenderTargetSize.fHeight, -SK_Scalar1,
                                 0, 0, 1);
             }
             combined.preConcat(fViewMatrix);
             GrGLSLGetMatrix<Size>(destMatrix, combined);
         }
     };
     GrGLGpu* gpu();
 
-    SkAutoTDelete<GrGLNameAllocator> fPathNameAllocator;
+    GrGLuint fFirstPreallocatedPathID;
+    GrGLsizei fPreallocatedPathCount;
     MatrixState fHWProjectionMatrixState;
     GrStencilSettings fHWPathStencilSettings;
     Caps fCaps;
 };
 
 #endif