Make the minimized home card not overlap activities on Athena

extensions/shell/browser/shell_desktop_controller.h

Index: extensions/shell/browser/shell_desktop_controller.h
diff --git a/extensions/shell/browser/shell_desktop_controller.h b/extensions/shell/browser/shell_desktop_controller.h
index afaef8ad5f2688fc99c4b008aa5b65dd1e0468d6..35c1a3b8b6cc2ef29a639f6fcceadffecc18f39e 100644
--- a/extensions/shell/browser/shell_desktop_controller.h
+++ b/extensions/shell/browser/shell_desktop_controller.h
@@ -30,6 +30,7 @@ class BrowserContext;
 }
 
 namespace gfx {
+class Insets;
 class Size;
 }
 
@@ -85,6 +86,11 @@ class ShellDesktopController : public aura::client::WindowTreeClient,
   // Closes and destroys the app windows.
   void CloseAppWindows();
 
+#if defined(OS_CHROMEOS)

[oshima, 2014/08/14 00:19:02]

do you need this ifdef?

I believe the CHROMEOS below are for ozone. This code should work fine on ozone.

[pkotwicz, 2014/08/14 15:49:39]

Removed the ifdef. Once app shell is for more than just CrOS, we will want an
ifdef because the app setting the workarea only makes sense on CrOS.

+  // Sets the screen's work area insets.

[pkotwicz, 2014/08/13 13:48:55]

There is no app API for setting the work area bounds so
SetDisplayWorkAreaInsets() does not really belong here. However, I could not
think of something better (without needing a lot of new code)

[oshima, 2014/08/14 00:19:02]

I was fine with something like this,

static_cast<TestScreen>(gfx::Screen::GetNativeScreen())->SetWorkAreaInsets()

but your approach is better.

+  void SetDisplayWorkAreaInsets(const gfx::Insets& insets);
+#endif
+
   // Overridden from aura::client::WindowTreeClient:
   virtual aura::Window* GetDefaultParent(aura::Window* context,
                                          aura::Window* window,