Remove unneeded variable usage analysis.

src/compiler.cc

Index: src/compiler.cc
diff --git a/src/compiler.cc b/src/compiler.cc
index 3fea3a325fce1979159b66af1a4f39f67a313bde..abecbcdc49398b9b44ae93328189e4a51849f882 100755
--- a/src/compiler.cc
+++ b/src/compiler.cc
@@ -34,11 +34,10 @@
 #include "debug.h"
 #include "fast-codegen.h"
 #include "full-codegen.h"
+#include "liveedit.h"
 #include "oprofile-agent.h"
 #include "rewriter.h"
 #include "scopes.h"
-#include "usage-analyzer.h"
-#include "liveedit.h"
 
 namespace v8 {
 namespace internal {
@@ -48,7 +47,7 @@ static Handle<Code> MakeCode(Handle<Context> context, CompilationInfo* info) {
   FunctionLiteral* function = info->function();
   ASSERT(function != NULL);
   // Rewrite the AST by introducing .result assignments where needed.
-  if (!Rewriter::Process(function) || !AnalyzeVariableUsage(function)) {
+  if (!Rewriter::Process(function)) {
     // Signal a stack overflow by returning a null handle.  The stack
     // overflow exception will be thrown by the caller.
     return Handle<Code>::null();