Enable optimization of top-level code.

src/arm/full-codegen-arm.cc

Index: src/arm/full-codegen-arm.cc
===================================================================
--- src/arm/full-codegen-arm.cc	(revision 10686)
+++ src/arm/full-codegen-arm.cc	(working copy)
@@ -123,10 +123,8 @@
 //
 // The function builds a JS frame.  Please see JavaScriptFrameConstants in
 // frames-arm.h for its layout.
-void FullCodeGenerator::Generate(CompilationInfo* info) {
-  ASSERT(info_ == NULL);
-  info_ = info;
-  scope_ = info->scope();
+void FullCodeGenerator::Generate() {
+  CompilationInfo* info = info_;
   handler_table_ =
       isolate()->factory()->NewFixedArray(function()->handler_count(), TENURED);
   SetFunctionPosition(function());