Remove GrTextureStorageAllocator. This was added from Chromium but never used and not expected to b…

src/gpu/gl/GrGLGpu.h

 /*
  * Copyright 2011 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef GrGLGpu_DEFINED
 #define GrGLGpu_DEFINED
 
@@ skipping 123 matching lines @@
 
     GrBuffer* onCreateBuffer(size_t size, GrBufferType intendedType, GrAccessPattern) override;
     GrTexture* onWrapBackendTexture(const GrBackendTextureDesc&, GrWrapOwnership) override;
     GrRenderTarget* onWrapBackendRenderTarget(const GrBackendRenderTargetDesc&,
                                               GrWrapOwnership) override;
     GrRenderTarget* onWrapBackendTextureAsRenderTarget(const GrBackendTextureDesc&) override;
     // Given a GrPixelConfig return the index into the stencil format array on GrGLCaps to a
     // compatible stencil format, or negative if there is no compatible stencil format.
     int getCompatibleStencilIndex(GrPixelConfig config);
 
-    // If |desc.fTextureStorageAllocator| exists, use that to create the
-    // texture. Otherwise, create the texture directly.
+
     // Returns whether the texture is successfully created. On success, the
     // result is stored in |info|.
     // The texture is populated with |texels|, if it exists.
     // The texture parameters are cached in |initialTexParams|.
     bool createTextureImpl(const GrSurfaceDesc& desc, GrGLTextureInfo* info,
                            bool renderTarget, GrGLTexture::TexParams* initialTexParams,
                            const SkTArray<GrMipLevel>& texels);
-    bool createTextureExternalAllocatorImpl(const GrSurfaceDesc& desc, GrGLTextureInfo* info,
-                                            const SkTArray<GrMipLevel>& texels);
 
     void onClear(GrRenderTarget*, const SkIRect& rect, GrColor color) override;
 
     void onClearStencilClip(GrRenderTarget*, const SkIRect& rect, bool insideClip) override;
 
     bool onMakeCopyForTextureParams(GrTexture*, const GrTextureParams&,
                                     GrTextureProducer::CopyParams*) const override;
 
     // Checks whether glReadPixels can be called to get pixel values in readConfig from the
     // render target.
@@ skipping 401 matching lines @@
     bool fHWPLSEnabled;
     bool fPLSHasBeenUsed;
 
     float fHWMinSampleShading;
 
     typedef GrGpu INHERITED;
     friend class GrGLPathRendering; // For accessing setTextureUnit.
 };
 
 #endif