Hook up the Mac password bubble to the browser and add browser tests.

chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.mm

Index: chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.mm
diff --git a/chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.mm b/chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.mm
index a2f6d3d7852427d9a44317e9a4e8d8ce2d381cc1..d4a4967a7275cec59d6cdcbecfce9d5835cfd646 100644
--- a/chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.mm
+++ b/chrome/browser/ui/cocoa/location_bar/location_bar_view_mac.mm
@@ -133,7 +133,7 @@ LocationBarViewMac::LocationBarViewMac(AutocompleteTextField* field,
           new GeneratedCreditCardDecoration(this)),
       search_button_decoration_(new SearchButtonDecoration(this)),
       manage_passwords_decoration_(
-          new ManagePasswordsDecoration(command_updater)),
+          new ManagePasswordsDecoration(command_updater, this)),
       browser_(browser),
       weak_ptr_factory_(this) {
   for (size_t i = 0; i < CONTENT_SETTINGS_NUM_TYPES; ++i) {
@@ -222,6 +222,7 @@ void LocationBarViewMac::UpdateManagePasswordsIconAndBubble() {
     return;
   ManagePasswordsUIController::FromWebContents(web_contents)
       ->UpdateIconAndBubbleState(manage_passwords_decoration_->icon());
+  OnDecorationsChanged();
 }
 
 void LocationBarViewMac::UpdatePageActions() {
@@ -526,6 +527,7 @@ NSPoint LocationBarViewMac::GetPageActionBubblePoint(
 }
 
 void LocationBarViewMac::Update(const WebContents* contents) {
+  UpdateManagePasswordsIconAndBubble();
   UpdateStarDecorationVisibility();
   UpdateTranslateDecoration();
   UpdateZoomDecoration();