Remove all of WebCore/platform/mac which is not mentioned in WebCore.gypi.

Source/WebCore/platform/mac/WebCoreFullScreenPlaceholderView.mm

Index: Source/WebCore/platform/mac/WebCoreFullScreenPlaceholderView.mm
diff --git a/Source/WebCore/platform/mac/WebCoreFullScreenPlaceholderView.mm b/Source/WebCore/platform/mac/WebCoreFullScreenPlaceholderView.mm
deleted file mode 100644
index 4bbcdd923ec2a6789d01076710a3574bb7e5bd20..0000000000000000000000000000000000000000
--- a/Source/WebCore/platform/mac/WebCoreFullScreenPlaceholderView.mm
+++ /dev/null
@@ -1,96 +0,0 @@
-/*
- * Copyright (C) 2012 Apple Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- *
- * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
- * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
- * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
- * THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "config.h"
-#include "WebCoreFullScreenPlaceholderView.h"
-
-#include "LocalizedStrings.h"
-#include "WebCoreFullScreenWarningView.h"
-#include <wtf/UnusedParam.h>
-#include <wtf/text/WTFString.h>
-
-@interface CAFilter : NSObject
-+ (CAFilter *)filterWithType:(NSString *)type;
-@end
-
-using namespace WebCore;
-
-@implementation WebCoreFullScreenPlaceholderView
-- (id)initWithFrame:(NSRect)frameRect
-{
-    self = [super initWithFrame:frameRect];
-    if (!self)
-        return nil;
-
-    [self setLayer:[CALayer layer]];
-    [self setLayerContentsRedrawPolicy:NSViewLayerContentsRedrawNever];
-    [self setWantsLayer:YES];
-
-    _exitWarning = adoptNS([[WebCoreFullScreenWarningView alloc] initWithTitle:clickToExitFullScreenText()]);
-    NSRect warningFrame = [_exitWarning.get() frame];
-    warningFrame.origin = NSMakePoint((frameRect.size.width - warningFrame.size.width) / 2, (frameRect.size.height - warningFrame.size.height) / 2);
-    [_exitWarning.get() setFrame:warningFrame];
-    [_exitWarning.get() setHidden:YES];
-    [self addSubview:_exitWarning.get()];
-
-    return self;
-}
-
-@synthesize target = _target;
-@synthesize action = _action;
-
-@dynamic contents;
-- (void)setContents:(id)contents
-{
-    [[self layer] setContents:contents];
-}
-
-- (id)contents
-{
-    return [[self layer] contents];
-}
-
-- (void)setExitWarningVisible:(BOOL)visible
-{
-    [_exitWarning.get() setHidden:!visible];
-    if (visible) {
-        CAFilter* filter = [CAFilter filterWithType:@"colorMonochrome"];
-        [filter setValue:[NSNumber numberWithFloat:-0.2] forKey:@"inputBias"];
-        [filter setValue:[NSNumber numberWithFloat:1] forKey:@"inputAmount"];
-        [[self layer] setFilters:[NSArray arrayWithObject:filter]];
-    } else
-        [[self layer] setFilters:nil];
-}
-
-- (void)mouseDown:(NSEvent *)theEvent
-{
-    UNUSED_PARAM(theEvent);
-
-    if (!_target || !_action)
-        return;
-    [_target performSelector:_action];
-}
-
-@end