Replace the explicit *VDA::Set{CGL,Egl,Glx}Context() methods with ctor params.

content/common/gpu/media/mac_video_decode_accelerator.mm

 // Copyright (c) 2012 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 "content/common/gpu/media/mac_video_decode_accelerator.h"
 
 #include "base/bind.h"
 #include "base/file_path.h"
 #import "base/mac/foundation_util.h"
 #import "base/memory/ref_counted_memory.h"
@@ skipping 75 matching lines @@
           GL_UNSIGNED_SHORT_8_8_APPLE,
           io_surface,
           0) != kCGLNoError) {
     DVLOG(1) << "Failed to bind image to texture.";
     return false;
   }
   return glGetError() == GL_NO_ERROR;
 }
 
 MacVideoDecodeAccelerator::MacVideoDecodeAccelerator(
-    media::VideoDecodeAccelerator::Client* client)
+    CGLContextObj cgl_context, media::VideoDecodeAccelerator::Client* client)
     : client_(client),
-      cgl_context_(NULL),
+      cgl_context_(cgl_context),
       did_build_config_record_(false) {
 }
 
-void MacVideoDecodeAccelerator::SetCGLContext(CGLContextObj cgl_context) {
-  DCHECK(CalledOnValidThread());
-  cgl_context_ = cgl_context;
-}
-
 bool MacVideoDecodeAccelerator::Initialize(media::VideoCodecProfile profile) {
   DCHECK(CalledOnValidThread());
 
   IOSurfaceSupport* io_surface_support = IOSurfaceSupport::Initialize();
   if (!io_surface_support)
     return false;
 
   MessageLoop::current()->PostTask(FROM_HERE, base::Bind(
       &MacVideoDecodeAccelerator::NotifyInitializeDone, base::AsWeakPtr(this)));
   return true;
@@ skipping 256 matching lines @@
 }
 
 MacVideoDecodeAccelerator::UsedPictureInfo::~UsedPictureInfo() {
 }
 
 MacVideoDecodeAccelerator::DecodedImageInfo::DecodedImageInfo() {
 }
 
 MacVideoDecodeAccelerator::DecodedImageInfo::~DecodedImageInfo() {
 }