Revert 245131 "Add the UI compositor to the Mac build", which caused Mac ASan redness

trunk/src/content/browser/compositor/reflector_impl.cc

-// 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.
-
-#include "content/browser/compositor/reflector_impl.h"
-
-#include "base/bind.h"
-#include "base/location.h"
-#include "content/browser/compositor/browser_compositor_output_surface.h"
-#include "content/common/gpu/client/gl_helper.h"
-#include "ui/compositor/layer.h"
-
-namespace content {
-
-ReflectorImpl::ReflectorImpl(
-    ui::Compositor* mirrored_compositor,
-    ui::Layer* mirroring_layer,
-    IDMap<BrowserCompositorOutputSurface>* output_surface_map,
-    int surface_id)
-    : texture_id_(0),
-      texture_size_(mirrored_compositor->size()),
-      output_surface_map_(output_surface_map),
-      mirrored_compositor_(mirrored_compositor),
-      mirroring_compositor_(mirroring_layer->GetCompositor()),
-      mirroring_layer_(mirroring_layer),
-      impl_message_loop_(ui::Compositor::GetCompositorMessageLoop()),
-      main_message_loop_(base::MessageLoopProxy::current()),
-      surface_id_(surface_id) {
-  CreateSharedTexture();
-  impl_message_loop_->PostTask(
-      FROM_HERE,
-      base::Bind(&ReflectorImpl::InitOnImplThread, this));
-}
-
-void ReflectorImpl::InitOnImplThread() {
-  // Ignore if the reflector was shutdown before
-  // initialized, or it's already initialized.
-  if (!output_surface_map_ || gl_helper_.get())
-    return;
-
-  BrowserCompositorOutputSurface* source_surface =
-      output_surface_map_->Lookup(surface_id_);
-  // Skip if the source surface isn't ready yet. This will be
-  // initiailze when the source surface becomes ready.
-  if (!source_surface)
-    return;
-
-  AttachToOutputSurface(source_surface);
-  gl_helper_->CopyTextureFullImage(texture_id_, texture_size_);
-  // The shared texture doesn't have the data, so invokes full redraw
-  // now.
-  main_message_loop_->PostTask(
-      FROM_HERE,
-      base::Bind(&ReflectorImpl::FullRedrawContentOnMainThread,
-                 scoped_refptr<ReflectorImpl>(this)));
-}
-
-void ReflectorImpl::OnSourceSurfaceReady(int surface_id) {
-  DCHECK_EQ(surface_id_, surface_id);
-  InitOnImplThread();
-}
-
-void ReflectorImpl::Shutdown() {
-  mirroring_compositor_ = NULL;
-  mirroring_layer_ = NULL;
-  shared_texture_ = NULL;
-  impl_message_loop_->PostTask(
-      FROM_HERE,
-      base::Bind(&ReflectorImpl::ShutdownOnImplThread, this));
-}
-
-void ReflectorImpl::ShutdownOnImplThread() {
-  BrowserCompositorOutputSurface* output_surface =
-      output_surface_map_->Lookup(surface_id_);
-  if (output_surface)
-    output_surface->SetReflector(NULL);
-  output_surface_map_ = NULL;
-  gl_helper_.reset();
-  // The instance must be deleted on main thread.
-  main_message_loop_->PostTask(
-      FROM_HERE,
-      base::Bind(&ReflectorImpl::DeleteOnMainThread,
-                 scoped_refptr<ReflectorImpl>(this)));
-}
-
-// This must be called on ImplThread, or before the surface is passed to
-// ImplThread.
-void ReflectorImpl::AttachToOutputSurface(
-    BrowserCompositorOutputSurface* output_surface) {
-  gl_helper_.reset(
-      new GLHelper(output_surface->context_provider()->ContextGL(),
-                   output_surface->context_provider()->ContextSupport()));
-  output_surface->SetReflector(this);
-}
-
-void ReflectorImpl::OnMirroringCompositorResized() {
-  mirroring_compositor_->ScheduleFullRedraw();
-}
-
-void ReflectorImpl::OnLostResources() {
-  shared_texture_ = NULL;
-  mirroring_layer_->SetShowPaintedContent();
-}
-
-void ReflectorImpl::OnReshape(gfx::Size size) {
-  if (texture_size_ == size)
-    return;
-  texture_size_ = size;
-  DCHECK(texture_id_);
-  gl_helper_->ResizeTexture(texture_id_, size);
-  main_message_loop_->PostTask(
-      FROM_HERE,
-      base::Bind(&ReflectorImpl::UpdateTextureSizeOnMainThread,
-                 this->AsWeakPtr(),
-                 texture_size_));
-}
-
-void ReflectorImpl::OnSwapBuffers() {
-  DCHECK(texture_id_);
-  gl_helper_->CopyTextureFullImage(texture_id_, texture_size_);
-  main_message_loop_->PostTask(
-      FROM_HERE,
-      base::Bind(&ReflectorImpl::FullRedrawOnMainThread,
-                 this->AsWeakPtr(),
-                 texture_size_));
-}
-
-void ReflectorImpl::OnPostSubBuffer(gfx::Rect rect) {
-  DCHECK(texture_id_);
-  gl_helper_->CopyTextureSubImage(texture_id_, rect);
-  main_message_loop_->PostTask(
-      FROM_HERE,
-      base::Bind(&ReflectorImpl::UpdateSubBufferOnMainThread,
-                 this->AsWeakPtr(),
-                 texture_size_,
-                 rect));
-}
-
-void ReflectorImpl::CreateSharedTexture() {
-  texture_id_ =
-      ImageTransportFactory::GetInstance()->GetGLHelper()->CreateTexture();
-  shared_texture_ =
-      ImageTransportFactory::GetInstance()->CreateOwnedTexture(
-          texture_size_, 1.0f, texture_id_);
-  mirroring_layer_->SetExternalTexture(shared_texture_.get());
-}
-
-ReflectorImpl::~ReflectorImpl() {
-  // Make sure the reflector is deleted on main thread.
-  DCHECK_EQ(main_message_loop_.get(),
-            base::MessageLoopProxy::current().get());
-}
-
-void ReflectorImpl::UpdateTextureSizeOnMainThread(gfx::Size size) {
-  if (!mirroring_layer_)
-    return;
-  mirroring_layer_->SetBounds(gfx::Rect(size));
-}
-
-void ReflectorImpl::FullRedrawOnMainThread(gfx::Size size) {
-  if (!mirroring_compositor_)
-    return;
-  UpdateTextureSizeOnMainThread(size);
-  mirroring_compositor_->ScheduleFullRedraw();
-}
-
-void ReflectorImpl::UpdateSubBufferOnMainThread(gfx::Size size,
-                                                gfx::Rect rect) {
-  if (!mirroring_compositor_)
-    return;
-  UpdateTextureSizeOnMainThread(size);
-  // Flip the coordinates to compositor's one.
-  int y = size.height() - rect.y() - rect.height();
-  gfx::Rect new_rect(rect.x(), y, rect.width(), rect.height());
-  mirroring_layer_->SchedulePaint(new_rect);
-}
-
-void ReflectorImpl::FullRedrawContentOnMainThread() {
-  mirrored_compositor_->ScheduleFullRedraw();
-}
-
-}  // namespace content