Reland of [debugger] do not restart frames that reference new.target for liveedit.

src/debug/mips/debug-mips.cc

Index: src/debug/mips/debug-mips.cc
diff --git a/src/debug/mips/debug-mips.cc b/src/debug/mips/debug-mips.cc
index 5a291aa086206a4e8b358cea20754836d78b39a6..4607c239eb2a74375229099d51e401b2a8c4a8f4 100644
--- a/src/debug/mips/debug-mips.cc
+++ b/src/debug/mips/debug-mips.cc
@@ -128,6 +128,9 @@
   // Load context from the function.
   __ lw(cp, FieldMemOperand(a1, JSFunction::kContextOffset));
 
+  // Clear new.target as a safety measure.
+  __ LoadRoot(a3, Heap::kUndefinedValueRootIndex);
+
   // Get function code.
   __ lw(at, FieldMemOperand(a1, JSFunction::kSharedFunctionInfoOffset));
   __ lw(at, FieldMemOperand(at, SharedFunctionInfo::kCodeOffset));