Remove SetAllowOverlappingView from RWHVMac

chrome/browser/ui/cocoa/find_bar/find_bar_cocoa_controller.mm

Index: chrome/browser/ui/cocoa/find_bar/find_bar_cocoa_controller.mm
diff --git a/chrome/browser/ui/cocoa/find_bar/find_bar_cocoa_controller.mm b/chrome/browser/ui/cocoa/find_bar/find_bar_cocoa_controller.mm
index 6433c73d3a30a45db18c6d55fdc46697d7dfee9d..64133de530020ce3b829e0afa21aa9c99f897a21 100644
--- a/chrome/browser/ui/cocoa/find_bar/find_bar_cocoa_controller.mm
+++ b/chrome/browser/ui/cocoa/find_bar/find_bar_cocoa_controller.mm
@@ -451,7 +451,6 @@ const float kRightEdgeOffset = 25;
   // If the find bar is not visible, make it actually hidden, so it'll no longer
   // respond to key events.
   [[self view] setHidden:![self isFindBarVisible]];
-  [[self browserWindowController] onFindBarVisibilityChanged];
 }
 
 - (gfx::Point)findBarWindowPosition {
@@ -507,7 +506,6 @@ const float kRightEdgeOffset = 25;
   if (!animate) {
     [findBarView_ setFrame:endFrame];
     [[self view] setHidden:![self isFindBarVisible]];
-    [[self browserWindowController] onFindBarVisibilityChanged];
     showHideAnimation_.reset(nil);
     return;
   }
@@ -515,13 +513,10 @@ const float kRightEdgeOffset = 25;
   // If animating, ensure that the find bar is not hidden. Hidden status will be
   // updated at the end of the animation.
   [[self view] setHidden:NO];
-  //[[self browserWindowController] onFindBarVisibilityChanged];
 
   // Reset the frame to what was saved above.
   [findBarView_ setFrame:startFrame];
 
-  [[self browserWindowController] onFindBarVisibilityChanged];
-
   showHideAnimation_.reset([self createAnimationForView:findBarView_
                                                 toFrame:endFrame
                                                duration:duration]);