gpu: Refactor to support cross-channel shared textures

gpu/command_buffer/service/context_group.cc

 // 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 "gpu/command_buffer/service/context_group.h"
 
 #include <algorithm>
 #include <string>
 
 #include "base/command_line.h"
@@ skipping 152 matching lines @@
   if (feature_info_->workarounds().max_cube_map_texture_size) {
     max_cube_map_texture_size = std::min(
         max_cube_map_texture_size,
         feature_info_->workarounds().max_cube_map_texture_size);
   }
 
   texture_manager_.reset(new TextureManager(memory_tracker_,
                                             feature_info_.get(),
                                             max_texture_size,
                                             max_cube_map_texture_size));
+  texture_manager_->set_framebuffer_manager(framebuffer_manager_.get());
 
   const GLint kMinTextureImageUnits = 8;
   const GLint kMinVertexTextureImageUnits = 0;
   if (!QueryGLFeatureU(
       GL_MAX_TEXTURE_IMAGE_UNITS, kMinTextureImageUnits,
       &max_texture_image_units_) ||
       !QueryGLFeatureU(
       GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS, kMinVertexTextureImageUnits,
       &max_vertex_texture_image_units_)) {
     LOG(ERROR) << "ContextGroup::Initialize failed because too few "
@@ skipping 61 matching lines @@
     return;
   }
 
   if (buffer_manager_ != NULL) {
     buffer_manager_->Destroy(have_context);
     buffer_manager_.reset();
   }
 
   if (framebuffer_manager_ != NULL) {
     framebuffer_manager_->Destroy(have_context);
+    if (texture_manager_)
+      texture_manager_->set_framebuffer_manager(NULL);
     framebuffer_manager_.reset();
   }
 
   if (renderbuffer_manager_ != NULL) {
     renderbuffer_manager_->Destroy(have_context);
     renderbuffer_manager_.reset();
   }
 
   if (texture_manager_ != NULL) {
     mailbox_manager_->DestroyOwnedTextures(texture_manager_.get(),
@@ skipping 75 matching lines @@
     GLenum pname, GLint min_required, uint32* v) {
   uint32 value = 0;
   GetIntegerv(pname, &value);
   bool result = CheckGLFeatureU(min_required, &value);
   *v = value;
   return result;
 }
 
 }  // namespace gles2
 }  // namespace gpu