Revert of Switch SkBlurImageFilter over to new onFilterImage interface

src/gpu/SkGpuDevice.cpp

Index: src/gpu/SkGpuDevice.cpp
diff --git a/src/gpu/SkGpuDevice.cpp b/src/gpu/SkGpuDevice.cpp
index 6fa56da6868398ed0422bea8d0df63f63aa57e84..823e9b84ff88de04b09e82417477f4d9e044be76 100644
--- a/src/gpu/SkGpuDevice.cpp
+++ b/src/gpu/SkGpuDevice.cpp
@@ -221,38 +221,6 @@
     return texture->asRenderTarget();
 }
 
-// This method ensures that we always have a texture-backed "bitmap" when we finally
-// call through to the base impl so that the image filtering code will take the
-// gpu-specific paths. This mirrors SkCanvas::internalDrawDevice (the other
-// use of SkImageFilter::filterImage) in that the source and dest will have
-// homogenous backing (e.g., raster or gpu).
-void SkGpuDevice::drawBitmapAsSpriteWithImageFilter(const SkDraw& draw, const SkBitmap& bitmap,
-                                                    int x, int y, const SkPaint& paint) {
-    if (bitmap.getTexture()) {
-        INHERITED::drawBitmapAsSpriteWithImageFilter(draw, bitmap, x, y, paint);
-        return;
-    }
-
-    SkAutoLockPixels alp(bitmap, !bitmap.getTexture());
-    if (!bitmap.getTexture() && !bitmap.readyToDraw()) {
-        return;
-    }
-
-    GrTexture* texture;
-    // draw sprite neither filters nor tiles.
-    AutoBitmapTexture abt(fContext, bitmap, GrTextureParams::ClampNoFilter(), &texture);
-    if (!texture) {
-        return;
-    }
-
-    SkBitmap newBitmap;
-
-    GrWrapTextureInBitmap(texture, texture->width(), texture->height(),
-                          bitmap.isOpaque(), &newBitmap);
-
-    INHERITED::drawBitmapAsSpriteWithImageFilter(draw, newBitmap, x, y, paint);
-}
-
 ///////////////////////////////////////////////////////////////////////////////
 
 bool SkGpuDevice::onReadPixels(const SkImageInfo& dstInfo, void* dstPixels, size_t dstRowBytes,