Handle DeviceLost error

Handle DeviceLostCallback once DeviceLost error occurs.
Disallow any other commands or actions on device to happen after device
has been lost.

Bug: dawn:68
Change-Id: Icbbbadf278cae5e6213050d00439118789c863dc
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/12801
Commit-Queue: Natasha Lee <natlee@microsoft.com>
Reviewed-by: Austin Eng <enga@chromium.org>

src/dawn_native/Buffer.cpp

diff --git a/src/dawn_native/Buffer.cpp b/src/dawn_native/Buffer.cpp
index c57d23a..8e72bd7 100644
--- a/src/dawn_native/Buffer.cpp
+++ b/src/dawn_native/Buffer.cpp
@@ -17,6 +17,7 @@
 #include "common/Assert.h"
 #include "dawn_native/Device.h"
 #include "dawn_native/DynamicUploader.h"
+#include "dawn_native/ErrorData.h"
 #include "dawn_native/ValidationUtils_autogen.h"
 
 #include <cstdio>
@@ -350,6 +351,7 @@
     }
 
     MaybeError BufferBase::ValidateSetSubData(uint32_t start, uint32_t count) const {
+        DAWN_TRY(GetDevice()->ValidateIsAlive());
         DAWN_TRY(GetDevice()->ValidateObject(this));
 
         switch (mState) {
@@ -388,6 +390,7 @@
     }
 
     MaybeError BufferBase::ValidateMap(wgpu::BufferUsage requiredUsage) const {
+        DAWN_TRY(GetDevice()->ValidateIsAlive());
         DAWN_TRY(GetDevice()->ValidateObject(this));
 
         switch (mState) {
@@ -407,6 +410,7 @@
     }
 
     MaybeError BufferBase::ValidateUnmap() const {
+        DAWN_TRY(GetDevice()->ValidateIsAlive());
         DAWN_TRY(GetDevice()->ValidateObject(this));
 
         switch (mState) {