Change fidl tables from cpp to c.

This fixes a build error that resulted from FIDL changes that are in the SDK.

Change-Id: I87a7632aac843903229e2c081d1426a31c8f8552
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/267731
Reviewed-by: Brian Salomon <[email protected]>
Commit-Queue: Mike Klein <[email protected]>

Author: rosasco-wk

build/fuchsia/sdk.gni

@@ -98,9 +98,9 @@ template("_fuchsia_fidl_library") {
 
     outputs = [
       "$target_gen_dir/fuchsia/$library_name_slashes/c/fidl.h",
+      "$target_gen_dir/fuchsia/$library_name_slashes/c/tables.c",
       "$target_gen_dir/fuchsia/$library_name_slashes/cpp/fidl.h",
       "$target_gen_dir/fuchsia/$library_name_slashes/cpp/fidl.cc",
-      "$target_gen_dir/fuchsia/$library_name_slashes/cpp/tables.cc",
     ]
 
     args = [
@@ -122,7 +122,7 @@ template("_fuchsia_fidl_library") {
       rebase_path("$target_gen_dir/fuchsia/$library_name_slashes/c/fidl.h"),
       "--output-c-tables",
       rebase_path(
-          "$target_gen_dir/fuchsia/$library_name_slashes/cpp/tables.cc"),
+          "$target_gen_dir/fuchsia/$library_name_slashes/c/tables.c"),
     ]
   }