[webgpu] refactor a few "context" classes · microsoft/onnxruntime@5cfc9a6

Failed to save: "C:\Program failed with error: The process 'C:\Program Files\Git\usr\bin\tar.exe' failed with exit code 2

Build and Test: RelWithDebInfo/_deps/dawn-src/src/dawn/common/Math.cpp#L107

'return': conversion from 'double' to 'float', possible loss of data

Build and Test: RelWithDebInfo/_deps/dawn-build/gen/src/dawn/common/GPUInfo_autogen.cpp#L363

switch statement contains no 'case' or 'default' labels

Build and Test: RelWithDebInfo/_deps/dawn-src/src/dawn/common/GPUInfo.cpp#L64

'return': conversion from 'unsigned __int64' to 'uint32_t', possible loss of data

Build and Test: RelWithDebInfo/_deps/dawn-src/src/tint/utils/system/executable_path_windows.cc#L41

'argument': conversion from 'size_t' to 'DWORD', possible loss of data

Build and Test: onnxruntime/core/mlas/lib/amd64/QgemmU8X8KernelAvx2.asm#L1234