Re-enable CPU mipmap generation for Ganesh. Aniso mips were landed a while ago. However, the CPU bu…

src/gpu/SkGr.cpp

Index: src/gpu/SkGr.cpp
diff --git a/src/gpu/SkGr.cpp b/src/gpu/SkGr.cpp
index 701e763b1e65d19904c22a9c3a73a80a0f6ca91e..71d9e620e3a7b062dcf029a79938cf6d9492e9a3 100644
--- a/src/gpu/SkGr.cpp
+++ b/src/gpu/SkGr.cpp
@@ -344,6 +344,12 @@ GrTexture* GrGenerateMipMapsAndUploadToTexture(GrContext* ctx, const SkBitmap& b
         return texture;
     }
 
+    // SkMipMap::Build doesn't handle sRGB data correctly (yet).
+    // Failover to the GL code-path for now.
+    if (kLinear_SkColorProfileType != bitmap.profileType()) {
+        return nullptr;
+    }
+
     SkASSERT(sizeof(int) <= sizeof(uint32_t));
     if (bitmap.width() < 0 || bitmap.height() < 0) {
         return nullptr;