D3D11: Fix wrong inner class BindingSlot's namespace.

BindingSlot is declared inside BindGroupTracker not
RenderPassBindGroupTracker.

Bug: None
Change-Id: I86586cdc62950fc885beadbbbce7c908f296ec21
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/235074
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Auto-Submit: Quyen Le <lehoangquyen@chromium.org>
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
diff --git a/src/dawn/native/d3d11/BindGroupTrackerD3D11.cpp b/src/dawn/native/d3d11/BindGroupTrackerD3D11.cpp
index c77cada..e75f2cc 100644
--- a/src/dawn/native/d3d11/BindGroupTrackerD3D11.cpp
+++ b/src/dawn/native/d3d11/BindGroupTrackerD3D11.cpp
@@ -108,9 +108,9 @@
 
 template <typename T, uint32_t InitialCapacity>
 template <typename Fn>
-void RenderPassBindGroupTracker::BindingSlot<T, InitialCapacity>::Bind(uint32_t idx,
-                                                                       T binding,
-                                                                       Fn&& bindFunc) {
+void BindGroupTracker::BindingSlot<T, InitialCapacity>::Bind(uint32_t idx,
+                                                             T binding,
+                                                             Fn&& bindFunc) {
     if (MaxBoundSlots() <= idx) {
         mBoundSlots.resize(idx + 1);
     }