[shuffle] Remove the `utils::` namespace.

This CL strips the `utils::` namespace declaration and usages.

Bug: tint:1988
Change-Id: I860b9cae052bec9eed0879fdda6ff2a05534af0e
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/143421
Auto-Submit: Dan Sinclair <dsinclair@chromium.org>
Reviewed-by: James Price <jrprice@google.com>
Commit-Queue: David Neto <dneto@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: David Neto <dneto@google.com>
diff --git a/src/tint/lang/wgsl/ast/struct_test.cc b/src/tint/lang/wgsl/ast/struct_test.cc
index 9e3472f..edf66ac 100644
--- a/src/tint/lang/wgsl/ast/struct_test.cc
+++ b/src/tint/lang/wgsl/ast/struct_test.cc
@@ -26,7 +26,7 @@
 
 TEST_F(AstStructTest, Creation) {
     auto name = Sym("s");
-    auto* s = Structure(name, utils::Vector{Member("a", ty.i32())});
+    auto* s = Structure(name, tint::Vector{Member("a", ty.i32())});
     EXPECT_EQ(s->name->symbol, name);
     EXPECT_EQ(s->members.Length(), 1u);
     EXPECT_TRUE(s->attributes.IsEmpty());
@@ -39,8 +39,8 @@
 TEST_F(AstStructTest, Creation_WithAttributes) {
     auto name = Sym("s");
 
-    auto* s = Structure(name, utils::Vector{Member("a", ty.i32())},
-                        utils::Vector{
+    auto* s = Structure(name, tint::Vector{Member("a", ty.i32())},
+                        tint::Vector{
                             ASTNodes().Create<BlockAttribute>(ID(), AllocateNodeID()),
                         });
     EXPECT_EQ(s->name->symbol, name);
@@ -56,8 +56,8 @@
 TEST_F(AstStructTest, CreationWithSourceAndAttributes) {
     auto name = Sym("s");
     auto* s = Structure(Source{Source::Range{Source::Location{27, 4}, Source::Location{27, 8}}},
-                        name, utils::Vector{Member("a", ty.i32())},
-                        utils::Vector{ASTNodes().Create<BlockAttribute>(ID(), AllocateNodeID())});
+                        name, tint::Vector{Member("a", ty.i32())},
+                        tint::Vector{ASTNodes().Create<BlockAttribute>(ID(), AllocateNodeID())});
     EXPECT_EQ(s->name->symbol, name);
     EXPECT_EQ(s->members.Length(), 1u);
     ASSERT_EQ(s->attributes.Length(), 1u);
@@ -72,8 +72,7 @@
     EXPECT_FATAL_FAILURE(
         {
             ProgramBuilder b;
-            b.Structure(b.Sym("S"), utils::Vector{b.Member("a", b.ty.i32()), nullptr},
-                        utils::Empty);
+            b.Structure(b.Sym("S"), tint::Vector{b.Member("a", b.ty.i32()), nullptr}, tint::Empty);
         },
         "internal compiler error");
 }
@@ -82,8 +81,8 @@
     EXPECT_FATAL_FAILURE(
         {
             ProgramBuilder b;
-            b.Structure(b.Sym("S"), utils::Vector{b.Member("a", b.ty.i32())},
-                        utils::Vector<const Attribute*, 1>{nullptr});
+            b.Structure(b.Sym("S"), tint::Vector{b.Member("a", b.ty.i32())},
+                        tint::Vector<const Attribute*, 1>{nullptr});
         },
         "internal compiler error");
 }
@@ -93,7 +92,7 @@
         {
             ProgramBuilder b1;
             ProgramBuilder b2;
-            b1.Structure(b1.Sym("S"), utils::Vector{b2.Member("a", b2.ty.i32())});
+            b1.Structure(b1.Sym("S"), tint::Vector{b2.Member("a", b2.ty.i32())});
         },
         "internal compiler error");
 }
@@ -104,8 +103,8 @@
             ProgramBuilder b1;
             ProgramBuilder b2;
             b1.Structure(
-                b1.Sym("S"), utils::Vector{b1.Member("a", b1.ty.i32())},
-                utils::Vector{b2.ASTNodes().Create<BlockAttribute>(b2.ID(), b2.AllocateNodeID())});
+                b1.Sym("S"), tint::Vector{b1.Member("a", b1.ty.i32())},
+                tint::Vector{b2.ASTNodes().Create<BlockAttribute>(b2.ID(), b2.AllocateNodeID())});
         },
         "internal compiler error");
 }