tint->dawn: Move src/include -> include

Also simplify the target names.

Bug: dawn:1275
Change-Id: I2929b70897f64903b91b693b48c2e8dd7c11d07b
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/79102
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Ben Clayton <bclayton@google.com>
diff --git a/generator/dawn_generator.gni b/generator/dawn_generator.gni
index c1eb5b9..fb7e639 100644
--- a/generator/dawn_generator.gni
+++ b/generator/dawn_generator.gni
@@ -23,9 +23,9 @@
 #  1. The generated output file directory structure has to match the structure
 #    of the source tree, starting at dawn_gen_root (gen/ or
 #    gen/third_party/dawn depending on where we are).
-#  2. src/include and dawn_gen_root/src/include has to match the structure of
+#  2. include and dawn_gen_root/include has to match the structure of
 #    the source tree too.
-#  3. Dawn files must use include relative to src/ or src/include such as
+#  3. Dawn files must use include relative to src/ or include such as
 #    "dawn/dawn.h" or "dawn/native/backend/BackendStuff.h".
 #
 # The allowed list below ensure 1). Include directory rules for Dawn ensure 3)
@@ -44,7 +44,7 @@
   "src/dawn/wire/client/",
   "src/dawn/wire/server/",
   "src/dawn/wire/",
-  "src/include/dawn/",
+  "include/dawn/",
   "emscripten-bits/",
   "webgpu-headers/",
 ]