Fix crash in NavigationHandle

Fix crash in NavigationHandle

This CL fixes a crash in NavigationHandleImpl when a Throttle tries to resume a
navigation twice. A check was hit in NavigationHandleImpl::Resume, now the
function will just be a no-op in that case.

BUG=570200
Committed: https://crrev.com/21b595f137ee6444093751a0e659127f72df53f2
Cr-Commit-Position: refs/heads/master@{#370371}

[clamy, 2016-01-20 10:54:57]

Description was changed from

==========
Fix crash in NavigationHandle

This CL fixes a crash in NavigationHandleImpl when a Throttle tries to resume a
navigation twice. A check was hit in NavigationHandleImpl::Resume, now the
function will just be a no-op in that case.

BUG=570200
==========

to

==========
Fix crash in NavigationHandle

This CL fixes a crash in NavigationHandleImpl when a Throttle tries to resume a
navigation twice. A check was hit in NavigationHandleImpl::Resume, now the
function will just be a no-op in that case.

BUG=570200
==========

[clamy, 2016-01-20 10:54:57]

clamy@chromium.org changed reviewers:
+ carlosk@chromium.org

[clamy, 2016-01-20 10:55:20]

@carlosk:PTAL

[carlosk, 2016-01-20 12:38:19]

LGTM

[clamy, 2016-01-20 12:39:00]

The CQ bit was checked by clamy@chromium.org

[commit-bot: I haz the power, 2016-01-20 12:39:34]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1610583002/20001
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1610583002/20001

[commit-bot: I haz the power, 2016-01-20 12:43:56]

Description was changed from

==========
Fix crash in NavigationHandle

This CL fixes a crash in NavigationHandleImpl when a Throttle tries to resume a
navigation twice. A check was hit in NavigationHandleImpl::Resume, now the
function will just be a no-op in that case.

BUG=570200
==========

to

==========
Fix crash in NavigationHandle

This CL fixes a crash in NavigationHandleImpl when a Throttle tries to resume a
navigation twice. A check was hit in NavigationHandleImpl::Resume, now the
function will just be a no-op in that case.

BUG=570200
==========

[commit-bot: I haz the power, 2016-01-20 12:43:57]

Committed patchset #2 (id:20001)

[commit-bot: I haz the power, 2016-01-20 12:45:13]

Description was changed from

==========
Fix crash in NavigationHandle

This CL fixes a crash in NavigationHandleImpl when a Throttle tries to resume a
navigation twice. A check was hit in NavigationHandleImpl::Resume, now the
function will just be a no-op in that case.

BUG=570200
==========

to

==========
Fix crash in NavigationHandle

This CL fixes a crash in NavigationHandleImpl when a Throttle tries to resume a
navigation twice. A check was hit in NavigationHandleImpl::Resume, now the
function will just be a no-op in that case.

BUG=570200

Committed: https://crrev.com/21b595f137ee6444093751a0e659127f72df53f2
Cr-Commit-Position: refs/heads/master@{#370371}
==========

[commit-bot: I haz the power, 2016-01-20 12:45:13]

Patchset 2 (id:??) landed as
https://crrev.com/21b595f137ee6444093751a0e659127f72df53f2
Cr-Commit-Position: refs/heads/master@{#370371}