Consistent formatting for Dawn/Tint.

This CL updates the clang format files to have a single shared format
between Dawn and Tint. The major changes are tabs are 4 spaces, lines
are 100 columns and namespaces are not indented.

Bug: dawn:1339
Change-Id: I4208742c95643998d9fd14e77a9cc558071ded39
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/87603
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
diff --git a/src/tint/ast/struct_member_align_attribute.cc b/src/tint/ast/struct_member_align_attribute.cc
index 8736dd10..f586e7e 100644
--- a/src/tint/ast/struct_member_align_attribute.cc
+++ b/src/tint/ast/struct_member_align_attribute.cc
@@ -23,22 +23,19 @@
 
 namespace tint::ast {
 
-StructMemberAlignAttribute::StructMemberAlignAttribute(ProgramID pid,
-                                                       const Source& src,
-                                                       uint32_t a)
+StructMemberAlignAttribute::StructMemberAlignAttribute(ProgramID pid, const Source& src, uint32_t a)
     : Base(pid, src), align(a) {}
 
 StructMemberAlignAttribute::~StructMemberAlignAttribute() = default;
 
 std::string StructMemberAlignAttribute::Name() const {
-  return "align";
+    return "align";
 }
 
-const StructMemberAlignAttribute* StructMemberAlignAttribute::Clone(
-    CloneContext* ctx) const {
-  // Clone arguments outside of create() call to have deterministic ordering
-  auto src = ctx->Clone(source);
-  return ctx->dst->create<StructMemberAlignAttribute>(src, align);
+const StructMemberAlignAttribute* StructMemberAlignAttribute::Clone(CloneContext* ctx) const {
+    // Clone arguments outside of create() call to have deterministic ordering
+    auto src = ctx->Clone(source);
+    return ctx->dst->create<StructMemberAlignAttribute>(src, align);
 }
 
 }  // namespace tint::ast