Reduce bucket count and range for wasm function count, and add "module" to some names.

src/wasm/wasm-module.cc

Index: src/wasm/wasm-module.cc
diff --git a/src/wasm/wasm-module.cc b/src/wasm/wasm-module.cc
index 79b7c405fe2f3de4208c1bef5014d6a86964a9af..68ef6ba97dbac7f9ba9971acdb5abcac07be5939 100644
--- a/src/wasm/wasm-module.cc
+++ b/src/wasm/wasm-module.cc
@@ -382,8 +382,8 @@ static MaybeHandle<JSFunction> LookupFunction(
 MaybeHandle<JSObject> WasmModule::Instantiate(Isolate* isolate,
                                               Handle<JSObject> ffi,
                                               Handle<JSArrayBuffer> memory) {
-  HistogramTimerScope wasm_instantiate_time_scope(
-      isolate->counters()->wasm_instantiate_time());
+  HistogramTimerScope wasm_instantiate_module_time_scope(
+      isolate->counters()->wasm_instantiate_module_time());
   this->shared_isolate = isolate;  // TODO(titzer): have a real shared isolate.
   ErrorThrower thrower(isolate, "WasmModule::Instantiate()");
   Factory* factory = isolate->factory();
@@ -430,8 +430,8 @@ MaybeHandle<JSObject> WasmModule::Instantiate(Isolate* isolate,
                                          *instance.globals_buffer);
   }
 
-  HistogramTimerScope wasm_compile_time_scope(
-      isolate->counters()->wasm_compile_time());
+  HistogramTimerScope wasm_compile_module_time_scope(
+      isolate->counters()->wasm_compile_module_time());
 
   //-------------------------------------------------------------------------
   // Compile wrappers to imported functions.