Make FindBar obey dialog bounds for GTK. Will fix other platforms in separate patches.

chrome/browser/ui/gtk/find_bar_gtk.h

Index: chrome/browser/ui/gtk/find_bar_gtk.h
diff --git a/chrome/browser/ui/gtk/find_bar_gtk.h b/chrome/browser/ui/gtk/find_bar_gtk.h
index a970b91f016fbb9336af8471aa60ecb29e40a544..ce41e71f083d7bf976cddd12a39e5c0262059253 100644
--- a/chrome/browser/ui/gtk/find_bar_gtk.h
+++ b/chrome/browser/ui/gtk/find_bar_gtk.h
@@ -65,6 +65,7 @@ class FindBarGtk : public FindBar,
   virtual string16 GetFindText();
   virtual string16 GetFindSelectedText();
   virtual string16 GetMatchCountText();
+  virtual int GetWidth();
 
   // Overridden from NotificationObserver:
   virtual void Observe(NotificationType type,
@@ -93,6 +94,9 @@ class FindBarGtk : public FindBar,
   // Asynchronously repositions the dialog.
   void Reposition();
 
+  // Returns the bounds of the dialog that contains the find bar.
+  gfx::Rect GetDialogBounds();
+
   // Returns the rectangle representing where to position the find bar. If
   // |avoid_overlapping_rect| is specified, the return value will be a rectangle
   // located immediately to the left of |avoid_overlapping_rect|, as long as
@@ -115,6 +119,10 @@ class FindBarGtk : public FindBar,
   static void OnParentSet(GtkWidget* widget, GtkObject* old_parent,
                           FindBarGtk* find_bar);
 
+  static void OnContentSizeAllocate(GtkWidget* content_hbox,
+                                    GtkAllocation* allocation,
+                                    FindBarGtk* find_bar);
+
   static void OnSetFloatingPosition(GtkFloatingContainer* floating_container,
                                     GtkAllocation* allocation,
                                     FindBarGtk* find_bar);