[wgsl]: s/texture_sampled_/texture_

These texture types were renamed in October 2020:
https://github.com/gpuweb/gpuweb/pull/1180

Tint has supported both forms since November 2020:
https://dawn-review.googlesource.com/c/tint/+/31380

Finally migrate to the new form so we can drop support for the old.

Bug: tint:286
Change-Id: Id19b79be28152b3de163f9cce75eefff1ae31d76
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/37702
Commit-Queue: Ben Clayton <bclayton@google.com>
Reviewed-by: dan sinclair <dsinclair@chromium.org>
diff --git a/examples/CppHelloTriangle.cpp b/examples/CppHelloTriangle.cpp
index dc66746..08fd4c5 100644
--- a/examples/CppHelloTriangle.cpp
+++ b/examples/CppHelloTriangle.cpp
@@ -106,7 +106,7 @@
     wgpu::ShaderModule fsModule = utils::CreateShaderModuleFromWGSL(device, R"(
         [[builtin(frag_coord)]] var<in> FragCoord : vec4<f32>;
         [[set(0), binding(0)]] var<uniform_constant> mySampler: sampler;
-        [[set(0), binding(1)]] var<uniform_constant> myTexture : texture_sampled_2d<f32>;
+        [[set(0), binding(1)]] var<uniform_constant> myTexture : texture_2d<f32>;
 
         [[location(0)]] var<out> FragColor : vec4<f32>;
         [[stage(fragment)]] fn main() -> void {