Revert of Revert of Revert of [MacViews] Implement AppWindowNativeWidgetMac::Maximize. (patchset #1 id:1 of https://codereview.chromium.org/1198403003/)

Reason for revert:
Un-reverting this seems to have caused these test failures:

https://build.chromium.org/p/chromium.mac/builders/Mac10.6%20Tests/builds/3755

Original issue's description:
> Revert of Revert of [MacViews] Implement AppWindowNativeWidgetMac::Maximize. (patchset #1 id:1 of https://codereview.chromium.org/1192373006/)
>
> Reason for revert:
> The failing test cleared up without this revert, so relanding.
>
> Original issue's description:
> > Revert of [MacViews] Implement AppWindowNativeWidgetMac::Maximize. (patchset #5 id:80001 of https://codereview.chromium.org/1184643003/)
> >
> > Reason for revert:
> > This seems the most likely cause of a reliable Mac browser test failure.
> >
> > e.g https://build.chromium.org/p/chromium.webkit/builders/Mac10.6%20Tests/builds/29726
> >
> > Original issue's description:
> > > [MacViews] Implement AppWindowNativeWidgetMac::Maximize.
> > >
> > > This makes MacViews behavior consistent with the existing Cocoa
> > > implementation and adds a heap of tests for interactions between
> > > Minimize, Restore, Maximize, and Fullscreen.
> > >
> > > This also changes NativeAppWindowCocoa behavior to be more
> > > consistent with other platforms:
> > > - isMaximized, isMinimized, isFullscreen are mutually exclusive,
> > > - maximize() shows the window if it is minimized,
> > > - restore() always restores the window size (in addition to unminimizing
> > > and exiting fullscreen).
> > >
> > > This also fixes a bug in the Cocoa implementation where Maximize
> > > changes the window frame while in fullscreen.
> > >
> > > BUG=459877
> > >
> > > Committed: https://crrev.com/5c69ddcaa25a8d5a6963a7cab4bb6b6e5e636b78
> > > Cr-Commit-Position: refs/heads/master@{#335465}
> >
> > TBR=tapted@chromium.org,jackhou@chromium.org
> > NOPRESUBMIT=true
> > NOTREECHECKS=true
> > NOTRY=true
> > BUG=459877
> >
> > Committed: https://crrev.com/21d068fd8a2094ea45cb067a22c8f8bd87c4b1be
> > Cr-Commit-Position: refs/heads/master@{#335493}
>
> TBR=tapted@chromium.org,jackhou@chromium.org
> NOPRESUBMIT=true
> NOTREECHECKS=true
> NOTRY=true
> BUG=459877
>
> Committed: https://crrev.com/2cf765dddad3b6f67e13c2ac1a4db4cfdd847f2c
> Cr-Commit-Position: refs/heads/master@{#335513}

TBR=tapted@chromium.org,jackhou@chromium.org,schenney@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=459877

Review URL: https://codereview.chromium.org/1196533003

Cr-Commit-Position: refs/heads/master@{#335531}

1 files changed, 1 insertions, 1 deletions

diff --git a/extensions/components/native_app_window/native_app_window_views.cc b/extensions/components/native_app_window/native_app_window_views.cc
index 0233623..e80e852 100644
--- a/extensions/components/native_app_window/native_app_window_views.cc
+++ b/extensions/components/native_app_window/native_app_window_views.cc
@@ -44,10 +44,10 @@ void NativeAppWindowViews::Init(AppWindow* app_window,
   Observe(app_window_->web_contents());
 
   widget_ = new views::Widget;
-  widget_->AddObserver(this);
   InitializeWindow(app_window, create_params);
 
   OnViewWasResized();
+  widget_->AddObserver(this);
 }
 
 NativeAppWindowViews::~NativeAppWindowViews() {