Remove GL-specific code from GMs and tests

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 90 matching lines @@
                      const SkIRect& srcRect,
                      const SkIPoint& dstPoint) override;
 
     void xferBarrier(GrRenderTarget*, GrXferBarrierType) override;
 
     void buildProgramDesc(GrProgramDesc*,
                           const GrPrimitiveProcessor&,
                           const GrPipeline&,
                           const GrBatchTracker&) const override;
 
-    const GrGLContext* glContextForTesting() const override {
-        return &this->glContext();
-    }
+    GrBackendObject createBackendTexture(void* pixels, int w, int h,
+                                         GrPixelConfig config) const override;
+    bool isBackendTexture(GrBackendObject id) const override;
+    void deleteBackendTexture(GrBackendObject id) const override;
 
 private:
     GrGLGpu(GrGLContext* ctx, GrContext* context);
 
     // GrGpu overrides
     void onResetContext(uint32_t resetBits) override;
 
     GrTexture* onCreateTexture(const GrSurfaceDesc& desc, GrGpuResource::LifeCycle lifeCycle,
                                const void* srcData, size_t rowBytes) override;
     GrTexture* onCreateCompressedTexture(const GrSurfaceDesc& desc,
@@ skipping 134 matching lines @@
     // NULL means whole target. Can be an empty rect.
     void flushRenderTarget(GrGLRenderTarget*, const SkIRect* bounds);
 
     void flushStencil(const GrStencilSettings&);
     void flushHWAAState(GrRenderTarget* rt, bool useHWAA);
 
     bool configToGLFormats(GrPixelConfig config,
                            bool getSizedInternal,
                            GrGLenum* internalFormat,
                            GrGLenum* externalFormat,
-                           GrGLenum* externalType);
+                           GrGLenum* externalType) const;
     // helper for onCreateTexture and writeTexturePixels
     bool uploadTexData(const GrSurfaceDesc& desc,
                        bool isNewTexture,
                        int left, int top, int width, int height,
                        GrPixelConfig dataConfig,
                        const void* data,
                        size_t rowBytes);
 
     // helper for onCreateCompressedTexture. If width and height are
     // set to -1, then this function will use desc.fWidth and desc.fHeight
@@ skipping 216 matching lines @@
 
     // we record what stencil format worked last time to hopefully exit early
     // from our loop that tries stencil formats and calls check fb status.
     int fLastSuccessfulStencilFmtIdx;
 
     typedef GrGpu INHERITED;
     friend class GrGLPathRendering; // For accessing setTextureUnit.
 };
 
 #endif