CL implementing focus-dismissal of the chrome.experimental.popup set of extension APIs.

Specifically, these changes cause a displayed pop-up to be dismissed when the focus shifts away from both the pop-up view, and the extension-view that launched the pop-up.I had to do a lot of investigating and trial-and-error to converge to the solution present here.  I was hoping to be able to piggy-back on the existing FocusManager's various listener routines, but because the pop-up is hosted in a BubbleWidget, which is a separate top-level window with its own focus manager, I could not rely on a given focus manager to take care of the focus change notifications. To get around the above issue, I added a new type of focus listener that can listen on native-window focus change events.  I added invocations to this listener throughout the Widget classes in the system so that registered listeners will be notified on focus change.  

I found some of the focus change events problematic, as the system will arbitrarily reassign the focus to the main browser window when shifting activation between chrome windows.  (SeefocusManagerWin::ClearNativeFocus).  To prevent this focus bounce from confusing focus listeners, I added a means to suppress notification of focus change during these operations.

I added GTK and Mac stubs for the new widget functions that will assert when called.  GTK and Cocoa development is not my expertise, so I thought // TODO(port) would be wiser.I'm uncertain of the best means to unit-test these changes.  Direction in this regard would be appreciated.

BUG=None
TEST=None

Review URL: http://codereview.chromium.org/552167

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@38685 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 1 insertions, 0 deletions

diff --git a/chrome/browser/renderer_host/render_widget_host_view_mac.h b/chrome/browser/renderer_host/render_widget_host_view_mac.h
index c707205..34903f0 100644
--- a/chrome/browser/renderer_host/render_widget_host_view_mac.h
+++ b/chrome/browser/renderer_host/render_widget_host_view_mac.h
@@ -115,6 +115,7 @@ class RenderWidgetHostViewMac : public RenderWidgetHostView {
   virtual void SetWindowVisibility(bool visible);
   virtual void WindowFrameChanged();
   virtual void SetBackground(const SkBitmap& background);
+  virtual bool ContainsNativeView(gfx::NativeView native_view) const;
 
   // Methods associated with GPU plugin instances
   virtual gfx::PluginWindowHandle AllocateFakePluginWindowHandle();