Make delegated software renderer work on Mac

content/browser/compositor/software_output_device_mac.mm

+// Copyright 2014 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 "content/browser/compositor/software_output_device_mac.h"
+
+#include "ui/compositor/compositor.h"
+
+// Declare methods used to present swaps to this view.
+@interface NSView (SoftwareDelegatedFrame)
+- (void)gotSoftwareFrame:(cc::SoftwareFrameData*)frame_data
+         withScaleFactor:(float)scale_factor
+              withCanvas:(SkCanvas*)canvas;
+@end
+
+@implementation NSView (SoftwareDelegatedFrame)
+- (void)gotSoftwareFrame:(cc::SoftwareFrameData*)frame_data
+         withScaleFactor:(float)scale_factor
+              withCanvas:(SkCanvas*)canvas {
+}
+@end
+
+namespace content {
+
+SoftwareOutputDeviceMac::SoftwareOutputDeviceMac(ui::Compositor* compositor)
+    : compositor_(compositor) {
+}
+
+SoftwareOutputDeviceMac::~SoftwareOutputDeviceMac() {
+}
+
+void SoftwareOutputDeviceMac::EndPaint(cc::SoftwareFrameData* frame_data) {
+  SoftwareOutputDevice::EndPaint(frame_data);
+
+  NSView* view = compositor_->widget();
+  [view gotSoftwareFrame:frame_data
+         withScaleFactor:scale_factor_
+              withCanvas:canvas_.get()];
+}
+
+}  // namespace content