GPUBuffer: RangeError on getMappedRange too big for ArrayBuffer

Bug: dawn:455
Change-Id: Iaa5e5baf06de4e255b29f3c1a23a103ae8e00320
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2493380
Commit-Queue: Kai Ninomiya <kainino@chromium.org>
Reviewed-by: Kai Ninomiya <kainino@chromium.org>
Cr-Commit-Position: refs/heads/master@{#823310}

third_party/blink/renderer/modules/webgpu/gpu_buffer.cc

@@ -196,9 +196,9 @@ DOMArrayBuffer* GPUBuffer::GetMappedRangeImpl(uint64_t offset,
   // This could eventually be upgrade to the max ArrayBuffer size instead of the
   // max TypedArray size. See crbug.com/951196
   if (range_size > v8::TypedArray::kMaxLength) {
-    exception_state.ThrowDOMException(
-        DOMExceptionCode::kOperationError,
+    exception_state.ThrowRangeError(
         "getMappedRange failed, size is too large for the implementation");
+    return nullptr;
   }
 
   if (range_size > std::numeric_limits<size_t>::max() - range_offset) {

third_party/blink/web_tests/WebGPUExpectations

@@ -52,9 +52,6 @@ crbug.com/1083478 [ Win ] wpt_internal/webgpu/webgpu/web-platform/reftests/canva
 crbug.com/dawn/542 wpt_internal/webgpu/cts.html?q=webgpu:api,validation,setViewport:* [ Failure ]
 crbug.com/dawn/542 wpt_internal/webgpu/cts.html?q=webgpu:api,validation,setScissorRect:* [ Failure ]
 
-# This test should be updated to expect an OperationError instead of a RangeError
-crbug.com/dawn/445 wpt_internal/webgpu/cts.html?q=webgpu:api,operation,buffers,map_oom:mappedAtCreation:* [ Failure ]
-
 #
 # Platform-independent failures
 #