Make the shadow for the fullscreen exit bubble for mac more prominent.

chrome/browser/ui/cocoa/fullscreen_exit_bubble_controller.mm

 // Copyright (c) 2011 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 <Cocoa/Cocoa.h>
 
 #include "base/logging.h"  // for NOTREACHED()
 #include "base/mac/mac_util.h"
 #include "base/sys_string_conversions.h"
 #include "base/utf_string_conversions.h"
 #include "chrome/app/chrome_command_ids.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/tab_contents/tab_contents_wrapper.h"
 #import "chrome/browser/ui/cocoa/browser_window_controller.h"
 #include "chrome/browser/ui/cocoa/event_utils.h"
 #import "chrome/browser/ui/cocoa/fullscreen_exit_bubble_controller.h"
 #import "chrome/browser/ui/cocoa/hyperlink_text_view.h"
 #import "chrome/browser/ui/cocoa/info_bubble_view.h"
 #import "chrome/browser/ui/cocoa/info_bubble_window.h"
 #include "chrome/browser/ui/fullscreen_exit_bubble_type.h"
 #include "grit/generated_resources.h"
 #include "third_party/GTM/AppKit/GTMUILocalizerAndLayoutTweaker.h"
 #import "third_party/GTM/AppKit/GTMNSAnimation+Duration.h"
 #import "third_party/GTM/AppKit/GTMUILocalizerAndLayoutTweaker.h"
 #include "ui/base/models/accelerator_cocoa.h"
 #include "ui/base/l10n/l10n_util_mac.h"
 
 
 namespace {
-const int kBubbleOffsetY = 10;
 const float kInitialDelay = 3.8;
 const float kHideDuration = 0.7;
 } // namespace
 
 @interface OneClickHyperlinkTextView : HyperlinkTextView
 @end
 @implementation OneClickHyperlinkTextView
 - (BOOL)acceptsFirstMouse:(NSEvent*)event {
   return YES;
 }
@@ skipping 62 matching lines @@
 
 // We want this to be a child of a browser window.  addChildWindow:
 // (called from this function) will bring the window on-screen;
 // unfortunately, [NSWindowController showWindow:] will also bring it
 // on-screen (but will cause unexpected changes to the window's
 // position).  We cannot have an addChildWindow: and a subsequent
 // showWindow:. Thus, we have our own version.
 - (void)showWindow {
   // Completes nib load.
   InfoBubbleWindow* info_bubble = static_cast<InfoBubbleWindow*>([self window]);
-  [bubble_ setArrowLocation:info_bubble::kNoArrow];
   [info_bubble setCanBecomeKeyWindow:NO];
   if (!fullscreen_bubble::ShowButtonsForType(bubbleType_)) {
     [self showButtons:NO];
     [self hideSoon];
   }
   NSRect windowFrame = [owner_ window].frame;
   [tweaker_ tweakUI:info_bubble];
   [self positionInWindowAtTop:NSHeight(windowFrame) width:NSWidth(windowFrame)];
   [[owner_ window] addChildWindow:info_bubble ordered:NSWindowAbove];
 
   [info_bubble orderFront:self];
 }
 
 - (void)awakeFromNib {
   DCHECK([[self window] isKindOfClass:[InfoBubbleWindow class]]);
   NSString* title = SysUTF16ToNSString(
       fullscreen_bubble::GetLabelTextForType(bubbleType_, url_));
   [messageLabel_ setStringValue:title];
   [self initializeLabel];
 }
 
 - (void)positionInWindowAtTop:(CGFloat)maxY width:(CGFloat)maxWidth {
   NSRect windowFrame = [self window].frame;
   NSPoint origin;
   origin.x = (int)(maxWidth/2 - NSWidth(windowFrame)/2);
   origin.y = maxY - NSHeight(windowFrame);
-  origin.y -= kBubbleOffsetY;
   [[self window] setFrameOrigin:origin];
 }
 
 - (void)updateURL:(const GURL&)url
        bubbleType:(FullscreenExitBubbleType)bubbleType {
   bubbleType_ = bubbleType;
 
   NSString* title = SysUTF16ToNSString(
       fullscreen_bubble::GetLabelTextForType(bubbleType_, url_));
   [messageLabel_ setStringValue:title];
@@ skipping 166 matching lines @@
 - (void)hideSoon {
   hideTimer_.reset(
       [[NSTimer scheduledTimerWithTimeInterval:kInitialDelay
                                         target:self
                                       selector:@selector(hideTimerFired:)
                                       userInfo:nil
                                        repeats:NO] retain]);
 }
 
 @end