ui: Move gl/ directory out of gfx/, up to ui/.

ui/gfx/gl/gl_context_nsview.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 "ui/gfx/gl/gl_context_nsview.h"
-
-#include <vector>
-
-#import <AppKit/NSOpenGL.h>
-#import <AppKit/NSView.h>
-
-#include "base/debug/trace_event.h"
-#include "base/logging.h"
-#include "ui/gfx/gl/gl_surface_nsview.h"
-
-namespace gfx {
-
-GLContextNSView::GLContextNSView(GLShareGroup* group)
-    : GLContext(group) {
-}
-
-GLContextNSView::~GLContextNSView() {
-}
-
-bool GLContextNSView::Initialize(GLSurface* surface,
-                                 GpuPreference gpu_preference) {
-  DCHECK(!context_) << "NSGLContext was previously initialized.";
-  gpu_preference_ = gpu_preference;
-
-  std::vector<NSOpenGLPixelFormatAttribute> attributes;
-  attributes.push_back(NSOpenGLPFAAccelerated);
-  attributes.push_back(NSOpenGLPFADoubleBuffer);
-  attributes.push_back(0);
-
-  scoped_nsobject<NSOpenGLPixelFormat> pixel_format;
-  pixel_format.reset([[NSOpenGLPixelFormat alloc]
-                         initWithAttributes:&attributes.front()]);
-  if (!pixel_format) {
-    LOG(ERROR) << "NSOpenGLPixelFormat initWithAttributes failed.";
-    return false;
-  }
-
-  context_.reset([[NSOpenGLContext alloc] initWithFormat:pixel_format
-                                            shareContext:nil]);
-  if (!context_) {
-    LOG(ERROR) << "NSOpenGLContext initWithFormat failed";
-    return false;
-  }
-
-  return true;
-}
-
-void GLContextNSView::Destroy() {
-  context_.reset(nil);
-}
-
-bool GLContextNSView::MakeCurrent(GLSurface* surface) {
-  TRACE_EVENT0("gpu", "GLContextNSView::MakeCurrent");
-  AcceleratedWidget view =
-      static_cast<AcceleratedWidget>(surface->GetHandle());
-  // Only set the context's view if the view is parented.
-  // I.e. it is a valid drawable.
-  if ([view window])
-    [context_ setView:view];
-  [context_ makeCurrentContext];
-
-  SetCurrent(this, surface);
-
-  if (!surface->OnMakeCurrent(this)) {
-    LOG(ERROR) << "Unable to make gl context current.";
-    return false;
-  }
-
-  return true;
-}
-
-void GLContextNSView::ReleaseCurrent(GLSurface* surface) {
-  [NSOpenGLContext clearCurrentContext];
-}
-
-bool GLContextNSView::IsCurrent(GLSurface* surface) {
-  return context_ == [NSOpenGLContext currentContext];
-}
-
-void* GLContextNSView::GetHandle() {
-  return context_;
-}
-
-void GLContextNSView::SetSwapInterval(int interval) {
-  DCHECK(interval == 0 || interval == 1);
-  GLint swap = interval;
-  [context_ setValues:&swap forParameter:NSOpenGLCPSwapInterval];
-}
-
-void GLContextNSView::FlushBuffer() {
-  [context_ flushBuffer];
-}
-
-}  // namespace gfx