deps: cherry-pick 7bd24767 from v8 upstream (v6.x)

Original commit message:

    Version 5.1.281.65 (cherry-pick)

    Merged 85b8c2dc4aee1031ac02f9d7c02d5c1aa76bc2ba

    Fix observable array access when formatting stack trace.

    BUG=chromium:617527
    LOG=N
    R=hablich@chromium.org

    Review URL: https://codereview.chromium.org/2051383002 .

    Cr-Commit-Position: refs/branch-heads/5.1@{#76}
    Cr-Branched-From: 167dc63b4c9a1d0f0fe1b19af93644ac9a561e83-refs/heads/5.1.281@{#1}
    Cr-Branched-From: 03953f52bd4a184983a551927c406be6489ef89b-refs/heads/master@{#35282}

PR-URL: #8078
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>
Reviewed-By: Ali Ijaz Sheikh <ofrobots@google.com>

deps/v8/include/v8-version.h

@@ -11,7 +11,7 @@
 #define V8_MAJOR_VERSION 5
 #define V8_MINOR_VERSION 0
 #define V8_BUILD_NUMBER 71
-#define V8_PATCH_LEVEL 60
+#define V8_PATCH_LEVEL 61
 
 // Use 1 for candidates and 0 otherwise.
 // (Boolean macro values are not supported by all preprocessors.)

deps/v8/src/js/messages.js

@@ -782,13 +782,15 @@ function FormatErrorString(error) {
 
 
 function GetStackFrames(raw_stack) {
+  var internal_raw_stack = new InternalArray();
+  %MoveArrayContents(raw_stack, internal_raw_stack);
   var frames = new InternalArray();
-  var sloppy_frames = raw_stack[0];
-  for (var i = 1; i < raw_stack.length; i += 4) {
-    var recv = raw_stack[i];
-    var fun = raw_stack[i + 1];
-    var code = raw_stack[i + 2];
-    var pc = raw_stack[i + 3];
+  var sloppy_frames = internal_raw_stack[0];
+  for (var i = 1; i < internal_raw_stack.length; i += 4) {
+    var recv = internal_raw_stack[i];
+    var fun = internal_raw_stack[i + 1];
+    var code = internal_raw_stack[i + 2];
+    var pc = internal_raw_stack[i + 3];
     var pos = %_IsSmi(code) ? code : %FunctionGetPositionForOffset(code, pc);
     sloppy_frames--;
     frames.push(new CallSite(recv, fun, pos, (sloppy_frames < 0)));