Enable showing the toolkit-views simplified fullscreen UI on Mac.

chrome/browser/ui/views/exclusive_access_bubble_views_context.h

Index: chrome/browser/ui/views/exclusive_access_bubble_views_context.h
diff --git a/chrome/browser/ui/views/exclusive_access_bubble_views_context.h b/chrome/browser/ui/views/exclusive_access_bubble_views_context.h
index 5d0f3d457f3c3e1c7b8bb723e0cc4ef771c23718..c9e9e5be43ced94785d8e16003187ffae405193d 100644
--- a/chrome/browser/ui/views/exclusive_access_bubble_views_context.h
+++ b/chrome/browser/ui/views/exclusive_access_bubble_views_context.h
@@ -4,7 +4,9 @@
 #ifndef CHROME_BROWSER_UI_VIEWS_EXCLUSIVE_ACCESS_BUBBLE_VIEWS_CONTEXT_H_
 #define CHROME_BROWSER_UI_VIEWS_EXCLUSIVE_ACCESS_BUBBLE_VIEWS_CONTEXT_H_
 
+#include "ui/base/accelerators/accelerator.h"
 #include "ui/gfx/geometry/rect.h"
+#include "ui/gfx/native_widget_types.h"
 
 class ExclusiveAccessManager;
 
@@ -13,18 +15,26 @@ class Widget;
 }
 
 // Context in which the exclusive access bubble view is initiated.
-class ExclusiveAccessBubbleViewsContext {
+class ExclusiveAccessBubbleViewsContext : public ui::AcceleratorProvider {

[msw, 2016/02/03 18:52:24]

Eh, I'm on the fence about this; should this interface instead have a
GetAcceleratorProvider, which BrowserView and ExclusiveAccessController then
override to return |this|, and separately subclass ui::AcceleratorProvider? It
seems like the accelerator functionality of BrowserView isn't tightly coupled to
its exclusive access context role.

[tapted, 2016/02/03 21:58:25]

Ah, that's nicer. I started with something like
GetAcceleratorForExclusiveAccessForId... or something like that and it felt
wrong (GetAccelerator was taken). Then I considered virtual inheritance.. which
is the "right" tool in some ways, but has performance implications. Then what I
had. But your suggestion is nice. Done.

  public:
-  virtual ~ExclusiveAccessBubbleViewsContext() {}
-
   // Returns ExclusiveAccessManager controlling exclusive access for the given
   // webview.
   virtual ExclusiveAccessManager* GetExclusiveAccessManager() = 0;
 
   // Returns the Widget that hosts the view containing the exclusive access
-  // bubble.
+  // bubble. Not used for the simplified fullscreen UI.
   virtual views::Widget* GetBubbleAssociatedWidget() = 0;
 
+  // Returns the view used to parent the bubble Widget.
+  virtual gfx::NativeView GetParentView() const = 0;

[msw, 2016/02/03 18:52:24]

nit: maybe |GetBubbleParentView|?

[tapted, 2016/02/03 21:58:25]

Done.

+
+  // Return the current mouse cursor location, offset from the top-left of the
+  // parent window.
+  virtual gfx::Point GetCursorPointInParent() const = 0;
+
+  // Return the current bounds (not restored bounds) of the parent window.
+  virtual gfx::Rect GetClientAreaBoundsInScreen() const = 0;
+
   // Returns true if immersive mode is enabled.
   virtual bool IsImmersiveModeEnabled() = 0;