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/examples/ManualSwapChainTest.cpp b/examples/ManualSwapChainTest.cpp
index 94be77d..c99bf04 100644
--- a/examples/ManualSwapChainTest.cpp
+++ b/examples/ManualSwapChainTest.cpp
@@ -312,7 +312,7 @@
 
     // The hacky pipeline to render a triangle.
     utils::ComboRenderPipelineDescriptor2 pipelineDesc;
-    pipelineDesc.vertex.module = utils::CreateShaderModuleFromWGSL(device, R"(
+    pipelineDesc.vertex.module = utils::CreateShaderModule(device, R"(
         [[builtin(vertex_index)]] var<in> VertexIndex : u32;
         [[builtin(position)]] var<out> Position : vec4<f32>;
         const pos : array<vec2<f32>, 3> = array<vec2<f32>, 3>(
@@ -324,7 +324,7 @@
             Position = vec4<f32>(pos[VertexIndex], 0.0, 1.0);
             return;
         })");
-    pipelineDesc.cFragment.module = utils::CreateShaderModuleFromWGSL(device, R"(
+    pipelineDesc.cFragment.module = utils::CreateShaderModule(device, R"(
         [[location(0)]] var<out> fragColor : vec4<f32>;
         [[stage(fragment)]] fn main() -> void {
             fragColor = vec4<f32>(1.0, 0.0, 0.0, 1.0);