Fix Observatory double connection in clean browser

Fix Observatory double connection in clean browser

If the local storage of the browser is empty observatory connects two
times to the Service Protocol having as side effect the redirection to
the `/vm` page

Closes https://github.com/dart-lang/sdk/issues/30312

R=bkonyi@google.com

Committed: https://github.com/dart-lang/sdk/commit/acfd8a9f81ea2035912a4f3f028ecbf7bb9dcee4

[cbernaschina, 2017-08-01 21:16:17]

cbernaschina@google.com changed reviewers:
+ asiva@google.com, rmacnak@google.com

[cbernaschina, 2017-08-01 21:31:04]

cbernaschina@google.com changed reviewers:
+ bkonyi@google.com

[cbernaschina, 2017-08-01 21:31:05]

Better variable names connection => target

[bkonyi, 2017-08-01 21:33:44]

LGTM

[cbernaschina, 2017-08-01 21:36:28]

Description was changed from

==========
Fix Observatory double connection in clean browser

If the local storage of the browser is empty observatory connects two
times to the Service Protocol having as side effect the redirection to
the `/vm` page

Closes https://github.com/dart-lang/sdk/issues/30312
==========

to

==========
Fix Observatory double connection in clean browser

If the local storage of the browser is empty observatory connects two
times to the Service Protocol having as side effect the redirection to
the `/vm` page

Closes https://github.com/dart-lang/sdk/issues/30312

R=bkonyi@google.com

Committed:
https://github.com/dart-lang/sdk/commit/acfd8a9f81ea2035912a4f3f028ecbf7bb9dcee4
==========

[cbernaschina, 2017-08-01 21:36:30]

Committed patchset #2 (id:20001) manually as
acfd8a9f81ea2035912a4f3f028ecbf7bb9dcee4 (presubmit successful).