Enables permission bubbles to remain visible during fulscreen on Mac.

chrome/browser/ui/cocoa/browser_window_controller_private.mm

Index: chrome/browser/ui/cocoa/browser_window_controller_private.mm
diff --git a/chrome/browser/ui/cocoa/browser_window_controller_private.mm b/chrome/browser/ui/cocoa/browser_window_controller_private.mm
index e1b7885bd2a795e90f310c1899a97478ede4af75..7d780c0298c4d31e51dcc99ca392b978fc7e9514 100644
--- a/chrome/browser/ui/cocoa/browser_window_controller_private.mm
+++ b/chrome/browser/ui/cocoa/browser_window_controller_private.mm
@@ -37,6 +37,7 @@
 #import "chrome/browser/ui/cocoa/tabs/tab_strip_view.h"
 #import "chrome/browser/ui/cocoa/toolbar/toolbar_controller.h"
 #import "chrome/browser/ui/cocoa/version_independent_window.h"
+#import "chrome/browser/ui/cocoa/website_settings/permission_bubble_cocoa.h"
 #include "chrome/browser/ui/fullscreen/fullscreen_controller.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/common/chrome_switches.h"
@@ -635,6 +636,16 @@ willPositionSheet:(NSWindow*)sheet
   [self enableBarVisibilityUpdates];
 }
 
+- (void)permissionBubbleWindowWillClose:(NSNotification*)notification {

[Robert Sesek, 2014/07/14 14:13:32]

This needs to be declared in the .h

[leng, 2014/07/14 18:17:24]

Done.

+  DCHECK(permissionBubbleCocoa_);
+
+  NSNotificationCenter* center = [NSNotificationCenter defaultCenter];
+  [center removeObserver:self
+                    name:NSWindowWillCloseNotification
+                  object:[notification object]];
+  [presentationModeController_ setAlwaysShowDropdown:NO];
+}
+
 - (void)setPresentationModeInternal:(BOOL)presentationMode
                       forceDropdown:(BOOL)forceDropdown {
   if (presentationMode == [self inPresentationMode])
@@ -648,9 +659,34 @@ willPositionSheet:(NSWindow*)sheet
     BOOL showDropdown = !fullscreen_for_tab &&
         !kiosk_mode &&
         (forceDropdown || [self floatingBarHasFocus]);
-    NSView* contentView = [[self window] contentView];
     presentationModeController_.reset(
         [[PresentationModeController alloc] initWithBrowserController:self]);
+
+    if (permissionBubbleCocoa_ && permissionBubbleCocoa_->IsVisible()) {
+      DCHECK(permissionBubbleCocoa_->window());
+      // A visible permission bubble will force the dropdown to remain visible.
+      [presentationModeController_ setAlwaysShowDropdown:YES];
+      showDropdown = YES;
+      // Register to be notified when the permission bubble is closed, to
+      // allow fullscreen to hide the dropdown.
+      NSNotificationCenter* center = [NSNotificationCenter defaultCenter];
+      [center addObserver:self
+                 selector:@selector(permissionBubbleWindowWillClose:)
+                     name:NSWindowWillCloseNotification
+                   object:permissionBubbleCocoa_->window()];
+    }
+    if (showDropdown) {
+      // Turn on layered mode for the window's root view for the entry
+      // animation.  Without this, the OS fullscreen animation for entering
+      // fullscreen mode does not correctly draw the tab strip.
+      // It will be turned off (set back to NO) when the animation finishes,
+      // in -windowDidEnterFullScreen:.
+      // Leaving wantsLayer on for the duration of presentation mode causes
+      // performance issues when the dropdown is animated in/out.  It also does
+      // not seem to be required for the exit animation.
+      [[[self window] cr_windowView] setWantsLayer:YES];
+    }
+    NSView* contentView = [[self window] contentView];
     [presentationModeController_ enterPresentationModeForContentView:contentView
                                  showDropdown:showDropdown];
   } else {
@@ -871,6 +907,7 @@ willPositionSheet:(NSWindow*)sheet
 
   [self showFullscreenExitBubbleIfNecessary];
   browser_->WindowFullscreenStateChanged();
+  [[[self window] cr_windowView] setWantsLayer:NO];
 }
 
 - (void)windowWillExitFullScreen:(NSNotification*)notification {