dawn_native: Fixup namespace from backend:: to dawn_native::
diff --git a/src/dawn_native/CommandBufferStateTracker.h b/src/dawn_native/CommandBufferStateTracker.h
index 3dc2906..9dd1edb 100644
--- a/src/dawn_native/CommandBufferStateTracker.h
+++ b/src/dawn_native/CommandBufferStateTracker.h
@@ -23,7 +23,7 @@
 #include <map>
 #include <set>
 
-namespace backend {
+namespace dawn_native {
 
     class CommandBufferStateTracker {
       public:
@@ -58,6 +58,6 @@
         RenderPipelineBase* mLastRenderPipeline = nullptr;
     };
 
-}  // namespace backend
+}  // namespace dawn_native
 
 #endif  // DAWNNATIVE_COMMANDBUFFERSTATETRACKER_H