Cosmetic changes to GrDrawOpAtlas

It looks like we won't be going in the direction of:

https://skia-review.googlesource.com/c/skia/+/35962 (Allow GrDrawOpAtlas to grow & shrink)

Pull out what is worth keeping.

TBR=bsalomon@google.com

Change-Id: Ia14c3c621e7b1d2d7f303a455a3e4d9660af5f6e
Reviewed-on: https://skia-review.googlesource.com/41362
Commit-Queue: Robert Phillips <robertphillips@google.com>
Reviewed-by: Jim Van Verth <jvanverth@google.com>
diff --git a/src/gpu/GrBufferAllocPool.cpp b/src/gpu/GrBufferAllocPool.cpp
index 53e0d8c..13ae404 100644
--- a/src/gpu/GrBufferAllocPool.cpp
+++ b/src/gpu/GrBufferAllocPool.cpp
@@ -38,10 +38,8 @@
     (block).fBuffer->unmap();                                                             \
 } while (false)
 
-GrBufferAllocPool::GrBufferAllocPool(GrGpu* gpu,
-                                     GrBufferType bufferType,
-                                     size_t blockSize)
-    : fBlocks(8) {
+GrBufferAllocPool::GrBufferAllocPool(GrGpu* gpu, GrBufferType bufferType, size_t blockSize)
+        : fBlocks(8) {
 
     fGpu = SkRef(gpu);
     fCpuData = nullptr;