Move CompilationInfo::this_has_uses to HGraph::this_has_uses.

src/ppc/lithium-codegen-ppc.cc

Index: src/ppc/lithium-codegen-ppc.cc
diff --git a/src/ppc/lithium-codegen-ppc.cc b/src/ppc/lithium-codegen-ppc.cc
index 9af13ae23525989c6194b0905028e8aa135d6656..81a3ffb2849c87c084f85c7f2fd61fe52a7c24c7 100644
--- a/src/ppc/lithium-codegen-ppc.cc
+++ b/src/ppc/lithium-codegen-ppc.cc
@@ -118,7 +118,7 @@ bool LCodeGen::GeneratePrologue() {
     // Sloppy mode functions and builtins need to replace the receiver with the
     // global proxy when called as functions (without an explicit receiver
     // object).
-    if (info_->this_has_uses() && is_sloppy(info_->language_mode()) &&
+    if (graph()->this_has_uses() && is_sloppy(info_->language_mode()) &&
         !info_->is_native()) {
       Label ok;
       int receiver_offset = info_->scope()->num_parameters() * kPointerSize;