Remove utility to create shader modules from GLSL

And rename CreateShaderModuleFromWGSL to CreateShaderModule.

Bug: dawn:572
Change-Id: I80dab401078b2001d738b87d6e24437f93b690d1
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/45764
Reviewed-by: Ryan Harrison <rharrison@chromium.org>
Reviewed-by: Austin Eng <enga@chromium.org>
Commit-Queue: Austin Eng <enga@chromium.org>
Auto-Submit: Corentin Wallez <cwallez@chromium.org>
diff --git a/src/tests/unittests/validation/IndexBufferValidationTests.cpp b/src/tests/unittests/validation/IndexBufferValidationTests.cpp
index b027338..91e3e55 100644
--- a/src/tests/unittests/validation/IndexBufferValidationTests.cpp
+++ b/src/tests/unittests/validation/IndexBufferValidationTests.cpp
@@ -22,13 +22,13 @@
     protected:
     wgpu::RenderPipeline MakeTestPipeline(wgpu::IndexFormat format,
         wgpu::PrimitiveTopology primitiveTopology) {
-        wgpu::ShaderModule vsModule = utils::CreateShaderModuleFromWGSL(device, R"(
+        wgpu::ShaderModule vsModule = utils::CreateShaderModule(device, R"(
             [[builtin(position)]] var<out> Position : vec4<f32>;
             [[stage(vertex)]] fn main() -> void {
                 Position = vec4<f32>(0.0, 0.0, 0.0, 1.0);
             })");
 
-        wgpu::ShaderModule fsModule = utils::CreateShaderModuleFromWGSL(device, R"(
+        wgpu::ShaderModule fsModule = utils::CreateShaderModule(device, R"(
             [[location(0)]] var<out> fragColor : vec4<f32>;
             [[stage(fragment)]] fn main() -> void {
                 fragColor = vec4<f32>(0.0, 1.0, 0.0, 1.0);