Fix the URL status bubble overlapping the Mac download shelf

chrome/browser/cocoa/browser_window_controller.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 <Carbon/Carbon.h>
 
 #include "base/mac_util.h"
 #include "base/scoped_nsdisable_screen_updates.h"
 #import "base/scoped_nsobject.h"
 #include "base/sys_string_conversions.h"
@@ skipping 186 matching lines @@
     // Register ourselves for frame changed notifications from the
     // tabContentArea.  This has to come after all of the resizing and
     // positioning above.
     [[NSNotificationCenter defaultCenter]
         addObserver:self
            selector:@selector(tabContentAreaFrameChanged:)
                name:nil
              object:[self tabContentArea]];
 
     // Create the bridge for the status bubble.
-    statusBubble_.reset(new StatusBubbleMac([self window]));
+    statusBubble_.reset(new StatusBubbleMac([self window], self));
 
 #if 0
     // Move all buttons down two pixels for visual balance.
     // TODO(alcor): remove this if we can't prevent window resize from breaking.
     NSArray* buttons =
         [NSArray arrayWithObjects:
           [[self window] standardWindowButton:NSWindowCloseButton],
           [[self window] standardWindowButton:NSWindowZoomButton],
           [[self window] standardWindowButton:NSWindowMiniaturizeButton],
           nil];
@@ skipping 215 matching lines @@
   browser_->ExecuteCommand(tag);
 }
 
 // Called when another part of the internal codebase needs to execute a
 // command.
 - (void)executeCommand:(int)command {
   if (browser_->command_updater()->IsCommandEnabled(command))
     browser_->ExecuteCommand(command);
 }
 
+// StatusBubble delegate method: tell the status bubble how far above the bottom
+// of the window it should position itself.
+- (float)verticalOffsetForStatusBubble {
+  float offset = 0.0;
+
+  // Don't create a download shelf if there isn't one.
+  if (downloadShelfController_.get() && [[self downloadShelf] isVisible])
+    offset += [[self downloadShelf] height];
+
+  return offset;
+}
+
 - (LocationBar*)locationBar {
   return [toolbarController_ locationBar];
 }
 
 - (StatusBubble*)statusBubble {
   return statusBubble_.get();
 }
 
 - (void)updateToolbarWithContents:(TabContents*)tab
                shouldRestoreState:(BOOL)shouldRestore {
@@ skipping 658 matching lines @@
   NSColor* toolbarButtonBorderColor = toolbarButtonIconColor;
   [theme setValue:toolbarButtonBorderColor
      forAttribute:@"borderColor"
             style:GTMThemeStyleToolBar
             state:YES];
 
   return theme;
 }
 @end