Make sure bubbles in Views default to close before their RenderFrameHosts.

components/bubble/bubble_delegate.h

Index: components/bubble/bubble_delegate.h
diff --git a/components/bubble/bubble_delegate.h b/components/bubble/bubble_delegate.h
index d1f07e952902878665510f224328a53c2e5084fa..d3914c30566fca986bd2385b129f12703e6ebc8f 100644
--- a/components/bubble/bubble_delegate.h
+++ b/components/bubble/bubble_delegate.h
@@ -13,6 +13,10 @@
 
 class BubbleUi;
 
+namespace content {
+class RenderFrameHost;
+}
+
 // Inherit from this class to define a bubble. A bubble is a small transient UI
 // surface anchored to a parent window. Most bubbles are dismissed when they
 // lose focus.
@@ -41,6 +45,10 @@ class BubbleDelegate {
   // Used to identify a bubble for collecting metrics.
   virtual std::string GetName() const = 0;
 
+  // If this returns non-null, the bubble will be closed when the returned frame
+  // is destroyed.
+  virtual const content::RenderFrameHost* OwningFrame() const = 0;
+
  private:
   DISALLOW_COPY_AND_ASSIGN(BubbleDelegate);
 };