| Added the optional `SK_ASSUME_SINGLE_GANESH_CONTEXT` build define. Clients that guarantee at | |
| most one `GrDirectContext` is in use per process may define it to skip the spinlock that protects | |
| Ganesh's global `GrProcessor` memory pool. This replaces the previous behavior where the lock | |
| was implicitly disabled by `SK_BUILD_FOR_ANDROID_FRAMEWORK`. |