Revert of Make SkSmallAllocator obey the RAII invariants and be expandable

tests/LayerDrawLooperTest.cpp

Index: tests/LayerDrawLooperTest.cpp
diff --git a/tests/LayerDrawLooperTest.cpp b/tests/LayerDrawLooperTest.cpp
index 87add3156f56f2224dc80ab0545552c6e5c4c296..4897fd28844fad377744fd95af3391e72d76ab7c 100644
--- a/tests/LayerDrawLooperTest.cpp
+++ b/tests/LayerDrawLooperTest.cpp
@@ -60,11 +60,8 @@
     SkPaint paint;
     auto looper(looperBuilder.detach());
     SkSmallAllocator<1, 32> allocator;
-    SkDrawLooper::Context* context = allocator.createWithIniterT<SkDrawLooper::Context>(
-        looper->contextSize(),
-        [&](void* buffer) {
-            return looper->createContext(&canvas, buffer);
-        });
+    void* buffer = allocator.reserveT<SkDrawLooper::Context>(looper->contextSize());
+    SkDrawLooper::Context* context = looper->createContext(&canvas, buffer);
 
     // The back layer should come first.
     REPORTER_ASSERT(reporter, context->next(&canvas, &paint));
@@ -103,11 +100,8 @@
     SkPaint paint;
     auto looper(looperBuilder.detach());
     SkSmallAllocator<1, 32> allocator;
-    SkDrawLooper::Context* context = allocator.createWithIniterT<SkDrawLooper::Context>(
-        looper->contextSize(),
-        [&](void* buffer) {
-            return looper->createContext(&canvas, buffer);
-        });
+    void* buffer = allocator.reserveT<SkDrawLooper::Context>(looper->contextSize());
+    SkDrawLooper::Context* context = looper->createContext(&canvas, buffer);
 
     // The back layer should come first.
     REPORTER_ASSERT(reporter, context->next(&canvas, &paint));
@@ -146,11 +140,8 @@
     SkPaint paint;
     sk_sp<SkDrawLooper> looper(looperBuilder.detach());
     SkSmallAllocator<1, 32> allocator;
-    SkDrawLooper::Context* context = allocator.createWithIniterT<SkDrawLooper::Context>(
-        looper->contextSize(),
-        [&](void* buffer) {
-            return looper->createContext(&canvas, buffer);
-        });
+    void* buffer = allocator.reserveT<SkDrawLooper::Context>(looper->contextSize());
+    SkDrawLooper::Context* context = looper->createContext(&canvas, buffer);
 
     // The back layer should come first.
     REPORTER_ASSERT(reporter, context->next(&canvas, &paint));