[builtins] Migrate String.prototype.trim/trimLeft/trimRight to C++.

src/bootstrapper.cc

Index: src/bootstrapper.cc
diff --git a/src/bootstrapper.cc b/src/bootstrapper.cc
index 66d7b2307d1084fe4b929707f6e56eea2ff44fab..b9fe2f20306b58bdef7b20b530601c17ca078215 100644
--- a/src/bootstrapper.cc
+++ b/src/bootstrapper.cc
@@ -1340,6 +1340,12 @@ void Genesis::InitializeGlobal(Handle<JSGlobalObject> global_object,
                           1, true);
     SimpleInstallFunction(prototype, "charCodeAt",
                           Builtins::kStringPrototypeCharCodeAt, 1, true);
+    SimpleInstallFunction(prototype, "trim", Builtins::kStringPrototypeTrim, 0,
+                          false);
+    SimpleInstallFunction(prototype, "trimLeft",
+                          Builtins::kStringPrototypeTrimLeft, 0, false);
+    SimpleInstallFunction(prototype, "trimRight",
+                          Builtins::kStringPrototypeTrimRight, 0, false);
   }
 
   {