VM: Change debug printing of Context to not print the raw-pointer

VM: Change debug printing of Context to not print the raw-pointer

This makes comparing flow-graphs from different runs of the VM much easier.

BUG=
R=rmacnak@google.com

Committed: https://github.com/dart-lang/sdk/commit/94e5994f16def4706ca36c6a6105f514798d7aac

[Florian Schneider, 2015-10-30 17:41:55]

fschneider@google.com changed reviewers:
+ rmacnak@google.com

[rmacnak, 2015-10-30 18:13:04]

lgtm w/ nit

https://codereview.chromium.org/1408223009/diff/1/runtime/vm/object.cc
File runtime/vm/object.cc (right):

https://codereview.chromium.org/1408223009/diff/1/runtime/vm/object.cc#newcod...
runtime/vm/object.cc:13881: return zone->PrintToString("Context num_variables:%
" Pd "",
"% " -> " %"

https://codereview.chromium.org/1408223009/diff/1/runtime/vm/object.cc#newcod...
runtime/vm/object.cc:13886: "Context num_variables:% " Pd " parent:{ %s }",
"% " -> " %"

[Florian Schneider, 2015-10-30 18:19:44]

Committed patchset #2 (id:20001) manually as
94e5994f16def4706ca36c6a6105f514798d7aac (presubmit successful).

[Florian Schneider, 2015-10-30 18:26:09]

https://codereview.chromium.org/1408223009/diff/1/runtime/vm/object.cc
File runtime/vm/object.cc (right):

https://codereview.chromium.org/1408223009/diff/1/runtime/vm/object.cc#newcod...
runtime/vm/object.cc:13881: return zone->PrintToString("Context num_variables:%
" Pd "",
On 2015/10/30 18:13:04, rmacnak wrote:
> "% " -> " %"

Done.

https://codereview.chromium.org/1408223009/diff/1/runtime/vm/object.cc#newcod...
runtime/vm/object.cc:13886: "Context num_variables:% " Pd " parent:{ %s }",
On 2015/10/30 18:13:04, rmacnak wrote:
> "% " -> " %"

Done.