MacViews: Fixed CHECK in |-updateTooltipIfRequiredAt:|.

ui/views/cocoa/bridged_content_view.mm

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #import "ui/views/cocoa/bridged_content_view.h"
 
 #include "base/logging.h"
 #import "base/mac/mac_util.h"
 #import "base/mac/scoped_nsobject.h"
 #include "base/strings/sys_string_conversions.h"
@@ skipping 314 matching lines @@
   hostedView_->GetWidget()->OnMouseEvent(&event);
 }
 
 - (void)updateTooltipIfRequiredAt:(const gfx::Point&)locationInContent {
   DCHECK(hostedView_);
   base::string16 newTooltipText;
 
   views::View* view = hostedView_->GetTooltipHandlerForPoint(locationInContent);
   if (view) {
     gfx::Point viewPoint = locationInContent;
-    views::View::ConvertPointToTarget(hostedView_, view, &viewPoint);
+    views::View::ConvertPointToScreen(hostedView_, &viewPoint);
+    views::View::ConvertPointFromScreen(view, &viewPoint);
     if (!view->GetTooltipText(viewPoint, &newTooltipText))
       DCHECK(newTooltipText.empty());
   }
   if (newTooltipText != lastTooltipText_) {
     std::swap(newTooltipText, lastTooltipText_);
     [self setToolTipAtMousePoint:base::SysUTF16ToNSString(lastTooltipText_)];
   }
 }
 
 - (void)updateWindowMask {
@@ skipping 934 matching lines @@
   }
 
   return [super accessibilityAttributeValue:attribute];
 }
 
 - (id)accessibilityHitTest:(NSPoint)point {
   return [hostedView_->GetNativeViewAccessible() accessibilityHitTest:point];
 }
 
 @end