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, 8 insertions, 0 deletions

diff --git a/views/view.cc b/views/view.cc
index 53f1102..3b823a8 100644
--- a/views/view.cc
+++ b/views/view.cc
@@ -788,6 +788,14 @@ Window* View::GetWindow() const {
   return widget ? widget->GetWindow() : NULL;
 }
 
+bool View::ContainsNativeView(gfx::NativeView native_view) const {
+  for (int i = 0, count = GetChildViewCount(); i < count; ++i) {
+    if (GetChildViewAt(i)->ContainsNativeView(native_view))
+      return true;
+  }
+  return false;
+}
+
 // Get the containing RootView
 RootView* View::GetRootView() {
   Widget* widget = GetWidget();