perfetto-ui: Remove _wasm suffix from js files

Remove the recently tntroduced "_wasm" suffix from:
  trace_processor_wasm.wasm
  trace_processor_wasm.js
  trace_processor_wasm.d.ts
While retaining the target name of trace_processor_wasm.

To do this we enforce users of wasm_lib set a name variable such that
name + "_wasm" == target_name
(i.e. "trace_processor" + "_wasm" == "trace_processor_wasm").
This isn't ideal but there is only one user of wasm_lib at the moment.

This implicilty fixes the bug where we had forgot to update a refrence
to the new name somewhere.

Change-Id: I5641f62ac68f2f185a28e2203f5760ef949c8294
diff --git a/ui/BUILD.gn b/ui/BUILD.gn
index fca5f67..104b6e8 100644
--- a/ui/BUILD.gn
+++ b/ui/BUILD.gn
@@ -325,10 +325,10 @@
 
 copy("wasm_dist") {
   deps = [
-    "//src/trace_processor:trace_processor_wasm.wasm($wasm_toolchain)",
+    "//src/trace_processor:trace_processor.wasm($wasm_toolchain)",
   ]
   sources = [
-    "$root_build_dir/wasm/trace_processor_wasm.wasm",
+    "$root_build_dir/wasm/trace_processor.wasm",
   ]
   outputs = [
     "$ui_dir/{{source_file_part}}",
@@ -338,14 +338,14 @@
 copy("wasm_gen") {
   deps = [
     ":dist_symlink",
-    "//src/trace_processor:trace_processor_wasm.d.ts($wasm_toolchain)",
-    "//src/trace_processor:trace_processor_wasm.js($wasm_toolchain)",
-    "//src/trace_processor:trace_processor_wasm.wasm($wasm_toolchain)",
+    "//src/trace_processor:trace_processor.d.ts($wasm_toolchain)",
+    "//src/trace_processor:trace_processor.js($wasm_toolchain)",
+    "//src/trace_processor:trace_processor.wasm($wasm_toolchain)",
   ]
   sources = [
-    "$root_build_dir/wasm/trace_processor_wasm.d.ts",
-    "$root_build_dir/wasm/trace_processor_wasm.js",
-    "$root_build_dir/wasm/trace_processor_wasm.wasm",
+    "$root_build_dir/wasm/trace_processor.d.ts",
+    "$root_build_dir/wasm/trace_processor.js",
+    "$root_build_dir/wasm/trace_processor.wasm",
   ]
   outputs = [
     "$ui_gen_dir/{{source_file_part}}",