Mode clean-up pt 1: rename classic/non-strict mode to sloppy mode

src/hydrogen.h

Index: src/hydrogen.h
diff --git a/src/hydrogen.h b/src/hydrogen.h
index b9d53be94e210e6b5faabf1d2918d8324ef67cc2..4e6c32e1ef0e6cb0364b8dc793ffc6f13f8e1ca3 100644
--- a/src/hydrogen.h
+++ b/src/hydrogen.h
@@ -2110,8 +2110,8 @@ class HOptimizedGraphBuilder : public HGraphBuilder, public AstVisitor {
     function_state()->ClearInlinedTestContext();
   }
   StrictModeFlag function_strict_mode_flag() {
-    return function_state()->compilation_info()->is_classic_mode()
-        ? kNonStrictMode : kStrictMode;
+    return function_state()->compilation_info()->is_sloppy_mode()
+        ? kSloppyMode : kStrictMode;
   }
 
   // Generators for inline runtime functions.