Fix the URL status bubble overlapping the Mac download shelf

chrome/browser/cocoa/status_bubble_mac.mm

 // Copyright (c) 2009 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.
 
 #include "chrome/browser/cocoa/status_bubble_mac.h"
 
 #include "app/gfx/text_elider.h"
 #include "base/string_util.h"
 #include "base/sys_string_conversions.h"
 #include "googleurl/src/gurl.h"
@@ skipping 38 matching lines @@
  @private
   NSString* content_;
   BubbleStyle style_;
 }
 
 - (void)setContent:(NSString*)content;
 - (void)setStyle:(BubbleStyle)style;
 - (NSFont*)font;
 @end
 
-StatusBubbleMac::StatusBubbleMac(NSWindow* parent)
+StatusBubbleMac::StatusBubbleMac(NSWindow* parent, id delegate)
     : parent_(parent),
+      delegate_(delegate),
       window_(nil),
       status_text_(nil),
-      url_text_(nil) {
+      url_text_(nil),
+      is_download_shelf_visible_(false) {
 }
 
 StatusBubbleMac::~StatusBubbleMac() {
   Hide();
 }
 
 void StatusBubbleMac::SetStatus(const std::wstring& status) {
   Create();
 
   NSString* status_ns = base::SysWideToNSString(status);
@@ skipping 99 matching lines @@
       offset = NSHeight(window_frame);
       [[window_ contentView] setStyle:STYLE_BOTTOM];
     } else if (offset > 0) {
       [[window_ contentView] setStyle:STYLE_FLOATING];
     } else {
       [[window_ contentView] setStyle:STYLE_STANDARD];
     }
 
     offset_ = offset;
     window_frame.origin.y -= offset;
-    [window_ setFrame:window_frame display:YES];
   } else {
     offset_ = 0;
     [[window_ contentView] setStyle:STYLE_STANDARD];
-    [window_ setFrame:window_frame display:YES];
   }
+
+  // |delegate_| can be nil during unit tests.
+  if (is_download_shelf_visible_) {
+    if ([delegate_ respondsToSelector:@selector(verticalOffsetForStatusBubble)])
+      window_frame.origin.y += [delegate_ verticalOffsetForStatusBubble];
+  }
+
+  [window_ setFrame:window_frame display:YES];
 }
 
 void StatusBubbleMac::UpdateDownloadShelfVisibility(bool visible) {
-  NOTIMPLEMENTED();
+  is_download_shelf_visible_ = visible;
 }
 
 void StatusBubbleMac::Create() {
   if (window_)
     return;
 
   NSRect rect = [parent_ frame];
   rect.size.height = kWindowHeight;
   rect.size.width = static_cast<int>(kWindowWidthPercent * rect.size.width);
   // TODO(avi):fix this for RTL
@@ skipping 117 matching lines @@
 
   NSDictionary* textDict = [NSDictionary dictionaryWithObjectsAndKeys:
     textFont, NSFontAttributeName,
     textShadow, NSShadowAttributeName,
     nil];
   [content_ drawAtPoint:NSMakePoint(kTextPositionX, kTextPositionY)
          withAttributes:textDict];
 }
 
 @end