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diff --git a/Source/WebCore/rendering/RenderThemeChromiumMac.mm b/Source/WebCore/rendering/RenderThemeChromiumMac.mm
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+++ b/Source/WebCore/rendering/RenderThemeChromiumMac.mm
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+/*
+ * Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
+ * Copyright (C) 2008, 2009 Google, Inc.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#import "config.h"
+#import "RenderThemeChromiumMac.h"
+#import "ChromiumBridge.h"
+#import "RenderMediaControlsChromium.h"
+#import "UserAgentStyleSheets.h"
+#import <Carbon/Carbon.h>
+#import <Cocoa/Cocoa.h>
+#import <wtf/RetainPtr.h>
+#import <wtf/StdLibExtras.h>
+#import <math.h>
+
+@interface RTCMFlippedView : NSView
+{}
+
+- (BOOL)isFlipped;
+- (NSText *)currentEditor;
+
+@end
+
+@implementation RTCMFlippedView
+
+- (BOOL)isFlipped {
+    return [[NSGraphicsContext currentContext] isFlipped];
+}
+
+- (NSText *)currentEditor {
+    return nil;
+}
+
+@end
+
+namespace WebCore {
+
+NSView* FlippedView()
+{
+    static NSView* view = [[RTCMFlippedView alloc] init];
+    return view;
+}
+
+PassRefPtr<RenderTheme> RenderTheme::themeForPage(Page*)
+{
+    static RenderTheme* rt = RenderThemeChromiumMac::create().releaseRef();
+    return rt;
+}
+
+PassRefPtr<RenderTheme> RenderThemeChromiumMac::create()
+{
+    return adoptRef(new RenderThemeChromiumMac);
+}
+
+bool RenderThemeChromiumMac::usesTestModeFocusRingColor() const
+{
+    return ChromiumBridge::layoutTestMode();
+}
+
+NSView* RenderThemeChromiumMac::documentViewFor(RenderObject*) const
+{
+    return FlippedView();
+}
+
+// Updates the control tint (a.k.a. active state) of |cell| (from |o|).
+// In the Chromium port, the renderer runs as a background process and controls'
+// NSCell(s) lack a parent NSView. Therefore controls don't have their tint
+// color updated correctly when the application is activated/deactivated.
+// FocusController's setActive() is called when the application is
+// activated/deactivated, which causes a repaint at which time this code is
+// called.
+// This function should be called before drawing any NSCell-derived controls,
+// unless you're sure it isn't needed.
+void RenderThemeChromiumMac::updateActiveState(NSCell* cell, const RenderObject* o)
+{
+    NSControlTint oldTint = [cell controlTint];
+    NSControlTint tint = isActive(o) ? [NSColor currentControlTint] :
+                                       static_cast<NSControlTint>(NSClearControlTint);
+
+    if (tint != oldTint)
+        [cell setControlTint:tint];
+}
+
+#if ENABLE(VIDEO)
+
+void RenderThemeChromiumMac::adjustMediaSliderThumbSize(RenderObject* o) const
+{
+    RenderMediaControlsChromium::adjustMediaSliderThumbSize(o);
+}
+
+bool RenderThemeChromiumMac::shouldRenderMediaControlPart(ControlPart part, Element* e)
+{
+    return RenderMediaControlsChromium::shouldRenderMediaControlPart(part, e);
+}
+
+bool RenderThemeChromiumMac::paintMediaPlayButton(RenderObject* object, const PaintInfo& paintInfo, const IntRect& rect)
+{
+    return RenderMediaControlsChromium::paintMediaControlsPart(MediaPlayButton, object, paintInfo, rect);
+}
+
+bool RenderThemeChromiumMac::paintMediaMuteButton(RenderObject* object, const PaintInfo& paintInfo, const IntRect& rect)
+{
+    return RenderMediaControlsChromium::paintMediaControlsPart(MediaMuteButton, object, paintInfo, rect);
+}
+
+bool RenderThemeChromiumMac::paintMediaSliderTrack(RenderObject* object, const PaintInfo& paintInfo, const IntRect& rect)
+{
+    return RenderMediaControlsChromium::paintMediaControlsPart(MediaSlider, object, paintInfo, rect);
+}
+
+bool RenderThemeChromiumMac::paintMediaControlsBackground(RenderObject* object, const PaintInfo& paintInfo, const IntRect& rect)
+{
+    return RenderMediaControlsChromium::paintMediaControlsPart(MediaTimelineContainer, object, paintInfo, rect);
+}
+
+String RenderThemeChromiumMac::extraMediaControlsStyleSheet()
+{
+    return String(mediaControlsChromiumUserAgentStyleSheet, sizeof(mediaControlsChromiumUserAgentStyleSheet));
+}
+
+bool RenderThemeChromiumMac::paintMediaVolumeSliderContainer(RenderObject* object, const PaintInfo& paintInfo, const IntRect& rect)
+{
+    return true;
+}
+
+bool RenderThemeChromiumMac::paintMediaVolumeSliderTrack(RenderObject* object, const PaintInfo& paintInfo, const IntRect& rect)
+{
+    return RenderMediaControlsChromium::paintMediaControlsPart(MediaVolumeSlider, object, paintInfo, rect);
+}
+
+bool RenderThemeChromiumMac::paintMediaVolumeSliderThumb(RenderObject* object, const PaintInfo& paintInfo, const IntRect& rect)
+{
+    return RenderMediaControlsChromium::paintMediaControlsPart(MediaVolumeSliderThumb, object, paintInfo, rect);
+}
+
+bool RenderThemeChromiumMac::paintMediaSliderThumb(RenderObject* object, const PaintInfo& paintInfo, const IntRect& rect)
+{
+    return RenderMediaControlsChromium::paintMediaControlsPart(MediaSliderThumb, object, paintInfo, rect);
+}
+
+IntPoint RenderThemeChromiumMac::volumeSliderOffsetFromMuteButton(Node* muteButton, const IntSize& size) const
+{
+    return RenderTheme::volumeSliderOffsetFromMuteButton(muteButton, size);
+}
+#endif
+
+} // namespace WebCore