Remove from notification center when web contents is destroyed.

brightray/browser/inspectable_web_contents_view_mac.h

@@ -15,6 +15,7 @@ class InspectableWebContentsViewMac : public InspectableWebContentsView {
  public:
   explicit InspectableWebContentsViewMac(
       InspectableWebContentsImpl* inspectable_web_contents_impl);
+  virtual ~InspectableWebContentsViewMac();
 
   virtual gfx::NativeView GetNativeView() const OVERRIDE;
   virtual void ShowDevTools() OVERRIDE;

brightray/browser/inspectable_web_contents_view_mac.mm

@@ -17,6 +17,10 @@ InspectableWebContentsViewMac::InspectableWebContentsViewMac(InspectableWebConte
       view_([[BRYInspectableWebContentsView alloc] initWithInspectableWebContentsViewMac:this]) {
 }
 
+InspectableWebContentsViewMac::~InspectableWebContentsViewMac() {
+  [view_ removeFromNotificationCenter];
+}
+
 gfx::NativeView InspectableWebContentsViewMac::GetNativeView() const {
   return view_.get();
 }

brightray/browser/mac/bry_inspectable_web_contents_view.h

@@ -8,6 +8,7 @@
   BRYInspectableWebContentsViewPrivate *_private;
 }
 
+- (void)removeFromNotificationCenter;
 - (IBAction)showDevTools:(id)sender;
 
 @end

brightray/browser/mac/bry_inspectable_web_contents_view.mm

@@ -76,6 +76,10 @@ void SetActive(content::WebContents* web_contents, bool active) {
   [super dealloc];
 }
 
+- (void)removeFromNotificationCenter {
+  [NSNotificationCenter.defaultCenter removeObserver:self];
+}
+
 - (IBAction)showDevTools:(id)sender {
   _private->inspectableWebContentsView->inspectable_web_contents()->ShowDevTools();
 }