[compiler] Switch code printing to not use literal.

This switches CodeGenerator::PrintCode to be based on the allocated
shared function info instead of the function literal. This is possible
now that even live edit allocates a shared function info for scripts.

R=ishell@chromium.org
BUG=chromium:604375
LOG=n

Review URL: https://codereview.chromium.org/1901753002

Cr-Commit-Position: refs/heads/master@{#35605}

src/codegen.cc

@@ -161,20 +161,16 @@ void CodeGenerator::PrintCode(Handle<Code> code, CompilationInfo* info) {
     bool print_source =
         info->parse_info() && (code->kind() == Code::OPTIMIZED_FUNCTION ||
                                code->kind() == Code::FUNCTION);
-    // TODO(mstarzinger): Switch this over to use SharedFunctionInfo instead of
-    // the FunctionLiteral, once we have a SharedFunctionInfo for live edit.
-    print_source = print_source && info->literal() != nullptr;
     if (print_source) {
-      FunctionLiteral* literal = info->literal();
+      Handle<SharedFunctionInfo> shared = info->shared_info();
       Handle<Script> script = info->script();
       if (!script->IsUndefined() && !script->source()->IsUndefined()) {
         os << "--- Raw source ---\n";
         StringCharacterStream stream(String::cast(script->source()),
-                                     literal->start_position());
+                                     shared->start_position());
         // fun->end_position() points to the last character in the stream. We
         // need to compensate by adding one to calculate the length.
-        int source_len =
-            literal->end_position() - literal->start_position() + 1;
+        int source_len = shared->end_position() - shared->start_position() + 1;
         for (int i = 0; i < source_len; i++) {
           if (stream.HasMore()) {
             os << AsReversiblyEscapedUC16(stream.GetNext());
@@ -194,8 +190,8 @@ void CodeGenerator::PrintCode(Handle<Code> code, CompilationInfo* info) {
       os << "--- Code ---\n";
     }
     if (print_source) {
-      FunctionLiteral* literal = info->literal();
-      os << "source_position = " << literal->start_position() << "\n";
+      Handle<SharedFunctionInfo> shared = info->shared_info();
+      os << "source_position = " << shared->start_position() << "\n";
     }
     code->Disassemble(debug_name.get(), os);
     os << "--- End code ---\n";