Implemented Browser Plugin (NOT FOR REVIEW)

content/renderer/gpu/webgraphicscontext3d_guest.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 "content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.h"
+#if defined(ENABLE_GPU)
 
-#include "third_party/khronos/GLES2/gl2.h"
-#ifndef GL_GLEXT_PROTOTYPES
-#define GL_GLEXT_PROTOTYPES 1
-#endif
-#include "third_party/khronos/GLES2/gl2ext.h"
+#include "content/renderer/gpu/webgraphicscontext3d_guest.h"
+
+#define GL_TRANSLATED_SHADER_SOURCE_LENGTH_ANGLE 0x93A0
+#define GL_UNKNOWN_CONTEXT_RESET_ARB      0x8255
 
 #include <algorithm>
 #include <set>
 
 #include "base/bind.h"
 #include "base/lazy_instance.h"
 #include "base/string_tokenizer.h"
 #include "base/command_line.h"
 #include "base/debug/trace_event.h"
 #include "base/logging.h"
 #include "base/message_loop.h"
 #include "base/metrics/histogram.h"
 #include "base/synchronization/lock.h"
-#include "content/common/gpu/gpu_memory_allocation.h"
+#include "content/common/child_process.h"
 #include "content/common/gpu/client/command_buffer_proxy.h"
 #include "content/common/gpu/client/gpu_channel_host.h"
 #include "content/public/common/content_switches.h"
+#include "content/renderer/guest_to_host_channel.h"
+#include "content/renderer/render_thread_impl.h"
+#include "content/renderer/render_view_impl.h"
+#include "gpu/command_buffer/client/gles2_lib.h"
 #include "gpu/command_buffer/client/gles2_implementation.h"
+#include "gpu/command_buffer/client/transfer_buffer.h"
 #include "gpu/command_buffer/common/constants.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebDocument.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebView.h"
 #include "webkit/glue/gl_bindings_skia_cmd_buffer.h"
 
-static base::LazyInstance<base::Lock>::Leaky
-    g_all_shared_contexts_lock = LAZY_INSTANCE_INITIALIZER;
-static base::LazyInstance<std::set<WebGraphicsContext3DCommandBufferImpl*> >
-    g_all_shared_contexts = LAZY_INSTANCE_INITIALIZER;
-
-namespace {
-
-void ClearSharedContexts() {
-  base::AutoLock lock(g_all_shared_contexts_lock.Get());
-  g_all_shared_contexts.Pointer()->clear();
+WebGraphicsContext3DGuest::WebGraphicsContext3DGuest(
+    gpu::CommandBuffer* command_buffer,
+    GuestToHostChannel* channel,
+    WebKit::WebView* webview)
+    : channel_(channel),
+      initialize_failed_(false),
+      web_view_(webview),
+      context_lost_callback_(0),
+      context_lost_reason_(GL_NO_ERROR),
+      swapbuffers_complete_callback_(0),
+      cached_width_(0),
+      cached_height_(0),
+      dead_(false),
+      bound_fbo_(0),
+      weak_ptr_factory_(ALLOW_THIS_IN_INITIALIZER_LIST(this)) {
+  command_buffer_.reset(command_buffer);
+  if (!command_buffer_->Initialize()) {
+    initialize_failed_ = true;
+    return;
+  }
 }
 
-} // namespace anonymous
-
-
-WebGraphicsContext3DCommandBufferImpl::WebGraphicsContext3DCommandBufferImpl(
-    int surface_id,
-    const GURL& active_url,
-    const base::WeakPtr<WebGraphicsContext3DSwapBuffersClient>& swap_client)
-    : initialize_failed_(false),
-      context_(NULL),
-      gl_(NULL),
-      host_(NULL),
-      surface_id_(surface_id),
-      active_url_(active_url),
-      swap_client_(swap_client),
-      memory_allocation_changed_callback_(0),
-      context_lost_callback_(0),
-      context_lost_reason_(GL_NO_ERROR),
-      error_message_callback_(0),
-      swapbuffers_complete_callback_(0),
-      gpu_preference_(gfx::PreferIntegratedGpu),
-      cached_width_(0),
-      cached_height_(0),
-      bound_fbo_(0),
-      weak_ptr_factory_(ALLOW_THIS_IN_INITIALIZER_LIST(this)) {
+WebGraphicsContext3DGuest::~WebGraphicsContext3DGuest() {
 }
 
-WebGraphicsContext3DCommandBufferImpl::
-    ~WebGraphicsContext3DCommandBufferImpl() {
-  if (host_) {
-    if (host_->WillGpuSwitchOccur(false, gpu_preference_)) {
-      host_->ForciblyCloseChannel();
-      ClearSharedContexts();
-    }
-  }
+bool WebGraphicsContext3DGuest::MaybeInitializeGL() {
+  if (gl_.get())
+    return true;
 
-  {
-    base::AutoLock lock(g_all_shared_contexts_lock.Get());
-    g_all_shared_contexts.Pointer()->erase(this);
-  }
-  delete context_;
-}
-
-bool WebGraphicsContext3DCommandBufferImpl::Initialize(
-    const WebGraphicsContext3D::Attributes& attributes) {
-  DCHECK(!context_);
-  TRACE_EVENT0("gpu", "WebGfxCtx3DCmdBfrImpl::initialize");
-  GpuChannelHostFactory* factory = GpuChannelHostFactory::instance();
-  if (!factory)
-    return false;
-
-  // The noExtensions and canRecoverFromContextLoss flags are
-  // currently used as hints that we are creating a context on
-  // behalf of WebGL or accelerated 2D canvas, respectively.
-  if (attributes.noExtensions || !attributes.canRecoverFromContextLoss)
-    gpu_preference_ = gfx::PreferDiscreteGpu;
-
-  bool retry = false;
-
-  // Note similar code in Pepper PlatformContext3DImpl::Init.
-  do {
-    host_ = factory->EstablishGpuChannelSync(
-        content::
-        CAUSE_FOR_GPU_LAUNCH_WEBGRAPHICSCONTEXT3DCOMMANDBUFFERIMPL_INITIALIZE);
-    if (!host_)
-      return false;
-    DCHECK(host_->state() == GpuChannelHost::kConnected);
-
-    if (!retry) {
-      // If the creation of this context requires all contexts for this
-      // client to be destroyed on the GPU process side, then drop the
-      // channel and recreate it.
-      if (host_->WillGpuSwitchOccur(true, gpu_preference_)) {
-        host_->ForciblyCloseChannel();
-        ClearSharedContexts();
-        retry = true;
-      }
-    } else {
-      retry = false;
-    }
-  } while (retry);
-
-  const content::GPUInfo& gpu_info = host_->gpu_info();
-  UMA_HISTOGRAM_ENUMERATION(
-      "GPU.WebGraphicsContext3D_Init_CanLoseContext",
-      attributes.canRecoverFromContextLoss * 2 + gpu_info.can_lose_context,
-      4);
-  if (attributes.canRecoverFromContextLoss == false) {
-    if (gpu_info.can_lose_context)
-      return false;
-  }
-
-  attributes_ = attributes;
-  return true;
-}
-
-bool WebGraphicsContext3DCommandBufferImpl::MaybeInitializeGL() {
-  if (context_)
-    return true;
   if (initialize_failed_)
     return false;
 
-  TRACE_EVENT0("gpu", "WebGfxCtx3DCmdBfrImpl::MaybeInitializeGL");
+  // Create the GLES2 helper, which writes the command buffer protocol.
+  gles2_helper_.reset(new gpu::gles2::GLES2CmdHelper(command_buffer_.get()));
+  if (!gles2_helper_->Initialize(kCommandBufferSize)) {
+    initialize_failed_ = true;
+    return false;
+  }
+  // Map the buffer into the renderer process's address space.
+  transfer_buffer_.reset(new gpu::TransferBuffer(gles2_helper_.get()));
 
-  // Convert WebGL context creation attributes into ContentGLContext / EGL size
-  // requests.
-  const int alpha_size = attributes_.alpha ? 8 : 0;
-  const int depth_size = attributes_.depth ? 24 : 0;
-  const int stencil_size = attributes_.stencil ? 8 : 0;
-  const int samples = attributes_.antialias ? 4 : 0;
-  const int sample_buffers = attributes_.antialias ? 1 : 0;
-  const int32 attribs[] = {
-    ContentGLContext::ALPHA_SIZE, alpha_size,
-    ContentGLContext::DEPTH_SIZE, depth_size,
-    ContentGLContext::STENCIL_SIZE, stencil_size,
-    ContentGLContext::SAMPLES, samples,
-    ContentGLContext::SAMPLE_BUFFERS, sample_buffers,
-    ContentGLContext::SHARE_RESOURCES, attributes_.shareResources ? 1 : 0,
-    ContentGLContext::BIND_GENERATES_RESOURCES, 0,
-    ContentGLContext::NONE,
-  };
+  // Create the object exposing the OpenGL API.
+  gl_.reset(new gpu::gles2::GLES2Implementation(
+      gles2_helper_.get(),
+      transfer_buffer_.get(),
+      false,
+      true));
 
-  const char* preferred_extensions = "*";
-
-  // We need to lock g_all_shared_contexts until after ContentGLContext::Create
-  // to ensure that the context we picked for our share group isn't deleted.
-  // (There's also a lock in our destructor.)
-  {
-    base::AutoLock lock(g_all_shared_contexts_lock.Get());
-    ContentGLContext* share_group = NULL;
-    if (attributes_.shareResources) {
-      share_group = g_all_shared_contexts.Pointer()->empty() ?
-          NULL : (*g_all_shared_contexts.Pointer()->begin())->context_;
-    }
-
-    if (surface_id_) {
-      context_ = ContentGLContext::CreateViewContext(
-          host_,
-          surface_id_,
-          share_group,
-          preferred_extensions,
-          attribs,
-          active_url_,
-          gpu_preference_);
-    } else {
-      context_ = ContentGLContext::CreateOffscreenContext(
-          host_,
-          gfx::Size(1, 1),
-          share_group,
-          preferred_extensions,
-          attribs,
-          active_url_,
-          gpu_preference_);
-    }
-  }
-
-  if (!context_)
+  // TODO(fsamuel): Is this right?
+  if (!gl_->Initialize(
+      kTransferBufferSize,
+      kTransferBufferSize,
+      kTransferBufferSize))
     return false;
 
-  gl_ = context_->GetImplementation();
-
-  // TODO(twiz):  This code is too fragile in that it assumes that only WebGL
-  // contexts will request noExtensions.
-  if (gl_ && attributes_.noExtensions)
-    gl_->EnableFeatureCHROMIUM("webgl_enable_glsl_webgl_validation");
-
-  context_->SetContextLostCallback(
-      base::Bind(&WebGraphicsContext3DCommandBufferImpl::OnContextLost,
-                 weak_ptr_factory_.GetWeakPtr()));
-
-  context_->GetCommandBufferProxy()->SetOnConsoleMessageCallback(
-      base::Bind(&WebGraphicsContext3DCommandBufferImpl::OnErrorMessage,
-                 weak_ptr_factory_.GetWeakPtr()));
-
-  // TODO(gman): Remove this.
-  const CommandLine& command_line = *CommandLine::ForCurrentProcess();
-  if (command_line.HasSwitch(switches::kDisableGLSLTranslator)) {
-    context_->DisableShaderTranslation();
+  if (!channel_->BindGraphics()) {
+    initialize_failed_ = true;
+    return false;
   }
-
   // Set attributes_ from created offscreen context.
   {
     GLint alpha_bits = 0;
     getIntegerv(GL_ALPHA_BITS, &alpha_bits);
     attributes_.alpha = alpha_bits > 0;
     GLint depth_bits = 0;
     getIntegerv(GL_DEPTH_BITS, &depth_bits);
     attributes_.depth = depth_bits > 0;
     GLint stencil_bits = 0;
     getIntegerv(GL_STENCIL_BITS, &stencil_bits);
     attributes_.stencil = stencil_bits > 0;
     GLint samples = 0;
     getIntegerv(GL_SAMPLES, &samples);
     attributes_.antialias = samples > 0;
   }
 
-  if (attributes_.shareResources) {
-    base::AutoLock lock(g_all_shared_contexts_lock.Get());
-    g_all_shared_contexts.Pointer()->insert(this);
-  }
-
-  context_->SetMemoryAllocationChangedCallback(base::Bind(
-      &WebGraphicsContext3DCommandBufferImpl::OnMemoryAllocationChanged,
-      weak_ptr_factory_.GetWeakPtr()));
-
   return true;
 }
 
-bool WebGraphicsContext3DCommandBufferImpl::makeContextCurrent() {
+bool WebGraphicsContext3DGuest::makeContextCurrent() {
   if (!MaybeInitializeGL())
     return false;
-  return ContentGLContext::MakeCurrent(context_);
+  gles2::SetGLContext(gl_.get());
+
+  // Don't request latest error status from service. Just use the locally
+  // cached information from the last flush.
+  // TODO(apatrick): I'm not sure if this should actually change the
+  // current context if it fails. For now it gets changed even if it fails
+  // because making GL calls with a NULL context crashes.
+  if (command_buffer_->GetLastState().error != gpu::error::kNoError)
+    return false;
+  return true;
 }
 
-int WebGraphicsContext3DCommandBufferImpl::width() {
+int WebGraphicsContext3DGuest::width() {
   return cached_width_;
 }
 
-int WebGraphicsContext3DCommandBufferImpl::height() {
+int WebGraphicsContext3DGuest::height() {
   return cached_height_;
 }
 
-bool WebGraphicsContext3DCommandBufferImpl::isGLES2Compliant() {
+void WebGraphicsContext3DGuest::playDead() {
+  dead_ = true;
+  OnContextLost();
+}
+
+bool WebGraphicsContext3DGuest::isGLES2Compliant() {
   return true;
 }
 
-bool WebGraphicsContext3DCommandBufferImpl::setParentContext(
+bool WebGraphicsContext3DGuest::setParentContext(
     WebGraphicsContext3D* parent_context) {
-  WebGraphicsContext3DCommandBufferImpl* parent_context_impl =
-      static_cast<WebGraphicsContext3DCommandBufferImpl*>(parent_context);
-  return context_->SetParent(
-      parent_context_impl ? parent_context_impl->context() : NULL);
+  NOTIMPLEMENTED();
+  return true;
 }
 
-WebGLId WebGraphicsContext3DCommandBufferImpl::getPlatformTextureId() {
-  return context_->GetParentTextureId();
+WebGLId WebGraphicsContext3DGuest::getPlatformTextureId() {
+  NOTIMPLEMENTED();
+  return 0;
 }
 
-void WebGraphicsContext3DCommandBufferImpl::prepareTexture() {
+void WebGraphicsContext3DGuest::prepareTexture() {
   // Copies the contents of the off-screen render target into the texture
   // used by the compositor.
-  if (ShouldUseSwapClient())
-    swap_client_->OnViewContextSwapBuffersPosted();
-  context_->SwapBuffers();
-  context_->Echo(base::Bind(
-      &WebGraphicsContext3DCommandBufferImpl::OnSwapBuffersComplete,
-      weak_ptr_factory_.GetWeakPtr()));
+  RenderViewImpl* renderview =
+      web_view_ ? RenderViewImpl::FromWebView(web_view_) : NULL;
+  if (renderview)
+    renderview->OnViewContextSwapBuffersPosted();
+
+  // Swap buffers
+  gl_->SwapBuffers();
+  channel_->IssueSwapBuffers();
+  // TODO(fsamuel): GuestToHostChannel will call OnSwapBuffersComplete
+  // when it receives a swap buffers ACK message from the host.
 #if defined(OS_MACOSX)
   // It appears that making the compositor's on-screen context current on
   // other platforms implies this flush. TODO(kbr): this means that the
   // TOUCH build and, in the future, other platforms might need this.
   gl_->Flush();
 #endif
 }
 
-void WebGraphicsContext3DCommandBufferImpl::postSubBufferCHROMIUM(
+void WebGraphicsContext3DGuest::postSubBufferCHROMIUM(
     int x, int y, int width, int height) {
-  // Same flow control as WebGraphicsContext3DCommandBufferImpl::prepareTexture
+  // Same flow control as WebGraphicsContext3DGuest::prepareTexture
   // (see above).
-  if (ShouldUseSwapClient())
-    swap_client_->OnViewContextSwapBuffersPosted();
+  RenderViewImpl* renderview =
+      web_view_ ? RenderViewImpl::FromWebView(web_view_) : NULL;
+  if (renderview)
+    renderview->OnViewContextSwapBuffersPosted();
   gl_->PostSubBufferCHROMIUM(x, y, width, height);
-  context_->Echo(base::Bind(
-      &WebGraphicsContext3DCommandBufferImpl::OnSwapBuffersComplete,
-      weak_ptr_factory_.GetWeakPtr()));
+  channel_->IssueSwapBuffers();
 }
 
-void WebGraphicsContext3DCommandBufferImpl::reshape(int width, int height) {
+void WebGraphicsContext3DGuest::reshape(int width, int height) {
   cached_width_ = width;
   cached_height_ = height;
 
   gl_->ResizeCHROMIUM(width, height);
+
+#ifdef FLIP_FRAMEBUFFER_VERTICALLY
+  scanline_.reset(new uint8[width * 4]);
+#endif  // FLIP_FRAMEBUFFER_VERTICALLY
 }
 
 #ifdef FLIP_FRAMEBUFFER_VERTICALLY
-void WebGraphicsContext3DCommandBufferImpl::FlipVertically(
+void WebGraphicsContext3DGuest::FlipVertically(
     uint8* framebuffer,
     unsigned int width,
     unsigned int height) {
-  if (width == 0)
+  uint8* scanline = scanline_.get();
+  if (!scanline)
     return;
-  scanline_.resize(width * 4);
-  uint8* scanline = &scanline_[0];
   unsigned int row_bytes = width * 4;
   unsigned int count = height / 2;
   for (unsigned int i = 0; i < count; i++) {
     uint8* row_a = framebuffer + i * row_bytes;
     uint8* row_b = framebuffer + (height - i - 1) * row_bytes;
     // TODO(kbr): this is where the multiplication of the alpha
     // channel into the color buffer will need to occur if the
     // user specifies the "premultiplyAlpha" flag in the context
     // creation attributes.
     memcpy(scanline, row_b, row_bytes);
     memcpy(row_b, row_a, row_bytes);
     memcpy(row_a, scanline, row_bytes);
   }
 }
 #endif
 
-bool WebGraphicsContext3DCommandBufferImpl::readBackFramebuffer(
+bool WebGraphicsContext3DGuest::readBackFramebuffer(
     unsigned char* pixels,
     size_t buffer_size,
     WebGLId buffer,
     int width,
     int height) {
   if (buffer_size != static_cast<size_t>(4 * width * height)) {
     return false;
   }
 
   // Earlier versions of this code used the GPU to flip the
@@ skipping 21 matching lines @@
 
 #ifdef FLIP_FRAMEBUFFER_VERTICALLY
   if (pixels) {
     FlipVertically(pixels, width, height);
   }
 #endif
 
   return true;
 }
 
-bool WebGraphicsContext3DCommandBufferImpl::readBackFramebuffer(
+bool WebGraphicsContext3DGuest::readBackFramebuffer(
     unsigned char* pixels,
     size_t buffer_size) {
   return readBackFramebuffer(pixels, buffer_size, 0, width(), height());
 }
 
-void WebGraphicsContext3DCommandBufferImpl::synthesizeGLError(
+void WebGraphicsContext3DGuest::synthesizeGLError(
     WGC3Denum error) {
   if (std::find(synthetic_errors_.begin(), synthetic_errors_.end(), error) ==
       synthetic_errors_.end()) {
     synthetic_errors_.push_back(error);
   }
 }
 
-void* WebGraphicsContext3DCommandBufferImpl::mapBufferSubDataCHROMIUM(
+void* WebGraphicsContext3DGuest::mapBufferSubDataCHROMIUM(
     WGC3Denum target,
     WGC3Dintptr offset,
     WGC3Dsizeiptr size,
     WGC3Denum access) {
   return gl_->MapBufferSubDataCHROMIUM(target, offset, size, access);
 }
 
-void WebGraphicsContext3DCommandBufferImpl::unmapBufferSubDataCHROMIUM(
+void WebGraphicsContext3DGuest::unmapBufferSubDataCHROMIUM(
     const void* mem) {
   return gl_->UnmapBufferSubDataCHROMIUM(mem);
 }
 
-void* WebGraphicsContext3DCommandBufferImpl::mapTexSubImage2DCHROMIUM(
+void* WebGraphicsContext3DGuest::mapTexSubImage2DCHROMIUM(
     WGC3Denum target,
     WGC3Dint level,
     WGC3Dint xoffset,
     WGC3Dint yoffset,
     WGC3Dsizei width,
     WGC3Dsizei height,
     WGC3Denum format,
     WGC3Denum type,
     WGC3Denum access) {
   return gl_->MapTexSubImage2DCHROMIUM(
       target, level, xoffset, yoffset, width, height, format, type, access);
 }
 
-void WebGraphicsContext3DCommandBufferImpl::unmapTexSubImage2DCHROMIUM(
+void WebGraphicsContext3DGuest::unmapTexSubImage2DCHROMIUM(
     const void* mem) {
   gl_->UnmapTexSubImage2DCHROMIUM(mem);
 }
 
-void WebGraphicsContext3DCommandBufferImpl::setVisibilityCHROMIUM(
+void WebGraphicsContext3DGuest::setVisibilityCHROMIUM(
     bool visible) {
   gl_->Flush();
-  context_->SetSurfaceVisible(visible);
+  // TODO(fsamuel): There doesn't seem to be an equivalent ppapi
+  // message. Do we care?
+  //context_->SetSurfaceVisible(visible);
   if (!visible)
     gl_->FreeEverything();
 }
 
-void WebGraphicsContext3DCommandBufferImpl::
-    setMemoryAllocationChangedCallbackCHROMIUM(
-        WebGraphicsMemoryAllocationChangedCallbackCHROMIUM* callback) {
-  memory_allocation_changed_callback_ = callback;
-}
-
-
-void WebGraphicsContext3DCommandBufferImpl::copyTextureToParentTextureCHROMIUM(
+void WebGraphicsContext3DGuest::copyTextureToParentTextureCHROMIUM(
     WebGLId texture, WebGLId parentTexture) {
   NOTIMPLEMENTED();
 }
 
-void WebGraphicsContext3DCommandBufferImpl::
+void WebGraphicsContext3DGuest::
     rateLimitOffscreenContextCHROMIUM() {
   gl_->RateLimitOffscreenContextCHROMIUM();
 }
 
-WebKit::WebString WebGraphicsContext3DCommandBufferImpl::
+WebKit::WebString WebGraphicsContext3DGuest::
     getRequestableExtensionsCHROMIUM() {
   return WebKit::WebString::fromUTF8(
       gl_->GetRequestableExtensionsCHROMIUM());
 }
 
-void WebGraphicsContext3DCommandBufferImpl::requestExtensionCHROMIUM(
+void WebGraphicsContext3DGuest::requestExtensionCHROMIUM(
     const char* extension) {
   gl_->RequestExtensionCHROMIUM(extension);
 }
 
-void WebGraphicsContext3DCommandBufferImpl::blitFramebufferCHROMIUM(
+void WebGraphicsContext3DGuest::blitFramebufferCHROMIUM(
     WGC3Dint srcX0, WGC3Dint srcY0, WGC3Dint srcX1, WGC3Dint srcY1,
     WGC3Dint dstX0, WGC3Dint dstY0, WGC3Dint dstX1, WGC3Dint dstY1,
     WGC3Dbitfield mask, WGC3Denum filter) {
   gl_->BlitFramebufferEXT(
       srcX0, srcY0, srcX1, srcY1,
       dstX0, dstY0, dstX1, dstY1,
       mask, filter);
 }
 
-void WebGraphicsContext3DCommandBufferImpl::
+void WebGraphicsContext3DGuest::
     renderbufferStorageMultisampleCHROMIUM(
         WGC3Denum target, WGC3Dsizei samples, WGC3Denum internalformat,
         WGC3Dsizei width, WGC3Dsizei height) {
   gl_->RenderbufferStorageMultisampleEXT(
       target, samples, internalformat, width, height);
 }
 
 // Helper macros to reduce the amount of code.
 
 #define DELEGATE_TO_GL(name, glname)                                    \
-void WebGraphicsContext3DCommandBufferImpl::name() {                    \
+void WebGraphicsContext3DGuest::name() {                    \
   gl_->glname();                                                        \
 }
 
 #define DELEGATE_TO_GL_1(name, glname, t1)                              \
-void WebGraphicsContext3DCommandBufferImpl::name(t1 a1) {               \
+void WebGraphicsContext3DGuest::name(t1 a1) {               \
   gl_->glname(a1);                                                      \
 }
 
 #define DELEGATE_TO_GL_1R(name, glname, t1, rt)                         \
-rt WebGraphicsContext3DCommandBufferImpl::name(t1 a1) {                 \
+rt WebGraphicsContext3DGuest::name(t1 a1) {                 \
   return gl_->glname(a1);                                               \
 }
 
 #define DELEGATE_TO_GL_1RB(name, glname, t1, rt)                        \
-rt WebGraphicsContext3DCommandBufferImpl::name(t1 a1) {                 \
+rt WebGraphicsContext3DGuest::name(t1 a1) {                 \
   return gl_->glname(a1) ? true : false;                                \
 }
 
 #define DELEGATE_TO_GL_2(name, glname, t1, t2)                          \
-void WebGraphicsContext3DCommandBufferImpl::name(t1 a1, t2 a2) {        \
+void WebGraphicsContext3DGuest::name(t1 a1, t2 a2) {        \
   gl_->glname(a1, a2);                                                  \
 }
 
 #define DELEGATE_TO_GL_2R(name, glname, t1, t2, rt)                     \
-rt WebGraphicsContext3DCommandBufferImpl::name(t1 a1, t2 a2) {          \
+rt WebGraphicsContext3DGuest::name(t1 a1, t2 a2) {          \
   return gl_->glname(a1, a2);                                           \
 }
 
 #define DELEGATE_TO_GL_3(name, glname, t1, t2, t3)                      \
-void WebGraphicsContext3DCommandBufferImpl::name(t1 a1, t2 a2, t3 a3) { \
+void WebGraphicsContext3DGuest::name(t1 a1, t2 a2, t3 a3) { \
   gl_->glname(a1, a2, a3);                                              \
 }
 
 #define DELEGATE_TO_GL_4(name, glname, t1, t2, t3, t4)                  \
-void WebGraphicsContext3DCommandBufferImpl::name(t1 a1, t2 a2, t3 a3, t4 a4) { \
+void WebGraphicsContext3DGuest::name(t1 a1, t2 a2, t3 a3, t4 a4) { \
   gl_->glname(a1, a2, a3, a4);                                          \
 }
 
 #define DELEGATE_TO_GL_5(name, glname, t1, t2, t3, t4, t5)              \
-void WebGraphicsContext3DCommandBufferImpl::name(t1 a1, t2 a2, t3 a3,   \
+void WebGraphicsContext3DGuest::name(t1 a1, t2 a2, t3 a3,   \
                                                  t4 a4, t5 a5) {        \
   gl_->glname(a1, a2, a3, a4, a5);                                      \
 }
 
 #define DELEGATE_TO_GL_6(name, glname, t1, t2, t3, t4, t5, t6)          \
-void WebGraphicsContext3DCommandBufferImpl::name(t1 a1, t2 a2, t3 a3,   \
+void WebGraphicsContext3DGuest::name(t1 a1, t2 a2, t3 a3,   \
                                                  t4 a4, t5 a5, t6 a6) { \
   gl_->glname(a1, a2, a3, a4, a5, a6);                                  \
 }
 
 #define DELEGATE_TO_GL_7(name, glname, t1, t2, t3, t4, t5, t6, t7)      \
-void WebGraphicsContext3DCommandBufferImpl::name(t1 a1, t2 a2, t3 a3,   \
+void WebGraphicsContext3DGuest::name(t1 a1, t2 a2, t3 a3,   \
                                                  t4 a4, t5 a5, t6 a6, t7 a7) { \
   gl_->glname(a1, a2, a3, a4, a5, a6, a7);                              \
 }
 
 #define DELEGATE_TO_GL_8(name, glname, t1, t2, t3, t4, t5, t6, t7, t8)  \
-void WebGraphicsContext3DCommandBufferImpl::name(t1 a1, t2 a2, t3 a3,   \
+void WebGraphicsContext3DGuest::name(t1 a1, t2 a2, t3 a3,   \
                                                  t4 a4, t5 a5, t6 a6,   \
                                                  t7 a7, t8 a8) {        \
   gl_->glname(a1, a2, a3, a4, a5, a6, a7, a8);                          \
 }
 
 #define DELEGATE_TO_GL_9(name, glname, t1, t2, t3, t4, t5, t6, t7, t8, t9) \
-void WebGraphicsContext3DCommandBufferImpl::name(t1 a1, t2 a2, t3 a3,   \
+void WebGraphicsContext3DGuest::name(t1 a1, t2 a2, t3 a3,   \
                                                  t4 a4, t5 a5, t6 a6,   \
                                                  t7 a7, t8 a8, t9 a9) { \
   gl_->glname(a1, a2, a3, a4, a5, a6, a7, a8, a9);                      \
 }
 
 DELEGATE_TO_GL_1(activeTexture, ActiveTexture, WGC3Denum)
 
 DELEGATE_TO_GL_2(attachShader, AttachShader, WebGLId, WebGLId)
 
 DELEGATE_TO_GL_3(bindAttribLocation, BindAttribLocation, WebGLId,
                  WGC3Duint, const WGC3Dchar*)
 
 DELEGATE_TO_GL_2(bindBuffer, BindBuffer, WGC3Denum, WebGLId)
 
-void WebGraphicsContext3DCommandBufferImpl::bindFramebuffer(
+void WebGraphicsContext3DGuest::bindFramebuffer(
     WGC3Denum target,
     WebGLId framebuffer) {
   gl_->BindFramebuffer(target, framebuffer);
   bound_fbo_ = framebuffer;
 }
 
 DELEGATE_TO_GL_2(bindRenderbuffer, BindRenderbuffer, WGC3Denum, WebGLId)
 
 DELEGATE_TO_GL_2(bindTexture, BindTexture, WGC3Denum, WebGLId)
 
@@ skipping 59 matching lines @@
 
 DELEGATE_TO_GL_2(detachShader, DetachShader, WebGLId, WebGLId)
 
 DELEGATE_TO_GL_1(disable, Disable, WGC3Denum)
 
 DELEGATE_TO_GL_1(disableVertexAttribArray, DisableVertexAttribArray,
                  WGC3Duint)
 
 DELEGATE_TO_GL_3(drawArrays, DrawArrays, WGC3Denum, WGC3Dint, WGC3Dsizei)
 
-void WebGraphicsContext3DCommandBufferImpl::drawElements(WGC3Denum mode,
+void WebGraphicsContext3DGuest::drawElements(WGC3Denum mode,
                                                          WGC3Dsizei count,
                                                          WGC3Denum type,
                                                          WGC3Dintptr offset) {
   gl_->DrawElements(
       mode, count, type,
       reinterpret_cast<void*>(static_cast<intptr_t>(offset)));
 }
 
 DELEGATE_TO_GL_1(enable, Enable, WGC3Denum)
 
 DELEGATE_TO_GL_1(enableVertexAttribArray, EnableVertexAttribArray,
                  WGC3Duint)
 
 DELEGATE_TO_GL(finish, Finish)
 
 DELEGATE_TO_GL(flush, Flush)
 
 DELEGATE_TO_GL_4(framebufferRenderbuffer, FramebufferRenderbuffer,
                  WGC3Denum, WGC3Denum, WGC3Denum, WebGLId)
 
 DELEGATE_TO_GL_5(framebufferTexture2D, FramebufferTexture2D,
                  WGC3Denum, WGC3Denum, WGC3Denum, WebGLId, WGC3Dint)
 
 DELEGATE_TO_GL_1(frontFace, FrontFace, WGC3Denum)
 
 DELEGATE_TO_GL_1(generateMipmap, GenerateMipmap, WGC3Denum)
 
-bool WebGraphicsContext3DCommandBufferImpl::getActiveAttrib(
+bool WebGraphicsContext3DGuest::getActiveAttrib(
     WebGLId program, WGC3Duint index, ActiveInfo& info) {
   if (!program) {
     synthesizeGLError(GL_INVALID_VALUE);
     return false;
   }
   GLint max_name_length = -1;
   gl_->GetProgramiv(
       program, GL_ACTIVE_ATTRIBUTE_MAX_LENGTH, &max_name_length);
   if (max_name_length < 0)
     return false;
   scoped_array<GLchar> name(new GLchar[max_name_length]);
   if (!name.get()) {
     synthesizeGLError(GL_OUT_OF_MEMORY);
     return false;
   }
   GLsizei length = 0;
   GLint size = -1;
   GLenum type = 0;
   gl_->GetActiveAttrib(
       program, index, max_name_length, &length, &size, &type, name.get());
   if (size < 0) {
     return false;
   }
   info.name = WebKit::WebString::fromUTF8(name.get(), length);
   info.type = type;
   info.size = size;
   return true;
 }
 
-bool WebGraphicsContext3DCommandBufferImpl::getActiveUniform(
+bool WebGraphicsContext3DGuest::getActiveUniform(
     WebGLId program, WGC3Duint index, ActiveInfo& info) {
   GLint max_name_length = -1;
   gl_->GetProgramiv(
       program, GL_ACTIVE_UNIFORM_MAX_LENGTH, &max_name_length);
   if (max_name_length < 0)
     return false;
   scoped_array<GLchar> name(new GLchar[max_name_length]);
   if (!name.get()) {
     synthesizeGLError(GL_OUT_OF_MEMORY);
     return false;
@@ skipping 17 matching lines @@
 
 DELEGATE_TO_GL_2R(getAttribLocation, GetAttribLocation,
                   WebGLId, const WGC3Dchar*, WGC3Dint)
 
 DELEGATE_TO_GL_2(getBooleanv, GetBooleanv, WGC3Denum, WGC3Dboolean*)
 
 DELEGATE_TO_GL_3(getBufferParameteriv, GetBufferParameteriv,
                  WGC3Denum, WGC3Denum, WGC3Dint*)
 
 WebKit::WebGraphicsContext3D::Attributes
-WebGraphicsContext3DCommandBufferImpl::getContextAttributes() {
+WebGraphicsContext3DGuest::getContextAttributes() {
   return attributes_;
 }
 
-WGC3Denum WebGraphicsContext3DCommandBufferImpl::getError() {
+WGC3Denum WebGraphicsContext3DGuest::getError() {
   if (!synthetic_errors_.empty()) {
     std::vector<WGC3Denum>::iterator iter = synthetic_errors_.begin();
     WGC3Denum err = *iter;
     synthetic_errors_.erase(iter);
     return err;
   }
 
   return gl_->GetError();
 }
 
-bool WebGraphicsContext3DCommandBufferImpl::isContextLost() {
-  return initialize_failed_ ||
-      (context_ && context_->IsCommandBufferContextLost()) ||
-      context_lost_reason_ != GL_NO_ERROR;
+bool WebGraphicsContext3DGuest::isContextLost() {
+  // TODO(fsamuel): Context is assumed to be never lost
+  // until I find a cleaner way to do this.
+  return dead_ || initialize_failed_;
 }
 
 DELEGATE_TO_GL_2(getFloatv, GetFloatv, WGC3Denum, WGC3Dfloat*)
 
 DELEGATE_TO_GL_4(getFramebufferAttachmentParameteriv,
                  GetFramebufferAttachmentParameteriv,
                  WGC3Denum, WGC3Denum, WGC3Denum, WGC3Dint*)
 
 DELEGATE_TO_GL_2(getIntegerv, GetIntegerv, WGC3Denum, WGC3Dint*)
 
 DELEGATE_TO_GL_3(getProgramiv, GetProgramiv, WebGLId, WGC3Denum, WGC3Dint*)
 
-WebKit::WebString WebGraphicsContext3DCommandBufferImpl::getProgramInfoLog(
+WebKit::WebString WebGraphicsContext3DGuest::getProgramInfoLog(
     WebGLId program) {
   GLint logLength = 0;
   gl_->GetProgramiv(program, GL_INFO_LOG_LENGTH, &logLength);
   if (!logLength)
     return WebKit::WebString();
   scoped_array<GLchar> log(new GLchar[logLength]);
   if (!log.get())
     return WebKit::WebString();
   GLsizei returnedLogLength = 0;
   gl_->GetProgramInfoLog(
       program, logLength, &returnedLogLength, log.get());
   DCHECK_EQ(logLength, returnedLogLength + 1);
   WebKit::WebString res =
       WebKit::WebString::fromUTF8(log.get(), returnedLogLength);
   return res;
 }
 
 DELEGATE_TO_GL_3(getRenderbufferParameteriv, GetRenderbufferParameteriv,
                  WGC3Denum, WGC3Denum, WGC3Dint*)
 
 DELEGATE_TO_GL_3(getShaderiv, GetShaderiv, WebGLId, WGC3Denum, WGC3Dint*)
 
-WebKit::WebString WebGraphicsContext3DCommandBufferImpl::getShaderInfoLog(
+WebKit::WebString WebGraphicsContext3DGuest::getShaderInfoLog(
     WebGLId shader) {
   GLint logLength = 0;
   gl_->GetShaderiv(shader, GL_INFO_LOG_LENGTH, &logLength);
   if (!logLength)
     return WebKit::WebString();
   scoped_array<GLchar> log(new GLchar[logLength]);
   if (!log.get())
     return WebKit::WebString();
   GLsizei returnedLogLength = 0;
   gl_->GetShaderInfoLog(
       shader, logLength, &returnedLogLength, log.get());
   DCHECK_EQ(logLength, returnedLogLength + 1);
   WebKit::WebString res =
       WebKit::WebString::fromUTF8(log.get(), returnedLogLength);
   return res;
 }
 
-WebKit::WebString WebGraphicsContext3DCommandBufferImpl::getShaderSource(
+WebKit::WebString WebGraphicsContext3DGuest::getShaderSource(
     WebGLId shader) {
   GLint logLength = 0;
   gl_->GetShaderiv(shader, GL_SHADER_SOURCE_LENGTH, &logLength);
   if (!logLength)
     return WebKit::WebString();
   scoped_array<GLchar> log(new GLchar[logLength]);
   if (!log.get())
     return WebKit::WebString();
   GLsizei returnedLogLength = 0;
   gl_->GetShaderSource(
       shader, logLength, &returnedLogLength, log.get());
   if (!returnedLogLength)
     return WebKit::WebString();
   DCHECK_EQ(logLength, returnedLogLength + 1);
   WebKit::WebString res =
       WebKit::WebString::fromUTF8(log.get(), returnedLogLength);
   return res;
 }
 
-WebKit::WebString WebGraphicsContext3DCommandBufferImpl::
+WebKit::WebString WebGraphicsContext3DGuest::
     getTranslatedShaderSourceANGLE(WebGLId shader) {
   GLint logLength = 0;
   gl_->GetShaderiv(
       shader, GL_TRANSLATED_SHADER_SOURCE_LENGTH_ANGLE, &logLength);
   if (!logLength)
     return WebKit::WebString();
   scoped_array<GLchar> log(new GLchar[logLength]);
   if (!log.get())
     return WebKit::WebString();
   GLsizei returnedLogLength = 0;
   gl_->GetTranslatedShaderSourceANGLE(
       shader, logLength, &returnedLogLength, log.get());
   if (!returnedLogLength)
     return WebKit::WebString();
   DCHECK_EQ(logLength, returnedLogLength + 1);
   WebKit::WebString res =
       WebKit::WebString::fromUTF8(log.get(), returnedLogLength);
   return res;
 }
 
-WebKit::WebString WebGraphicsContext3DCommandBufferImpl::getString(
+WebKit::WebString WebGraphicsContext3DGuest::getString(
     WGC3Denum name) {
   return WebKit::WebString::fromUTF8(
       reinterpret_cast<const char*>(gl_->GetString(name)));
 }
 
 DELEGATE_TO_GL_3(getTexParameterfv, GetTexParameterfv,
                  WGC3Denum, WGC3Denum, WGC3Dfloat*)
 
 DELEGATE_TO_GL_3(getTexParameteriv, GetTexParameteriv,
                  WGC3Denum, WGC3Denum, WGC3Dint*)
 
 DELEGATE_TO_GL_3(getUniformfv, GetUniformfv, WebGLId, WGC3Dint, WGC3Dfloat*)
 
 DELEGATE_TO_GL_3(getUniformiv, GetUniformiv, WebGLId, WGC3Dint, WGC3Dint*)
 
 DELEGATE_TO_GL_2R(getUniformLocation, GetUniformLocation,
                   WebGLId, const WGC3Dchar*, WGC3Dint)
 
 DELEGATE_TO_GL_3(getVertexAttribfv, GetVertexAttribfv,
                  WGC3Duint, WGC3Denum, WGC3Dfloat*)
 
 DELEGATE_TO_GL_3(getVertexAttribiv, GetVertexAttribiv,
                  WGC3Duint, WGC3Denum, WGC3Dint*)
 
-WGC3Dsizeiptr WebGraphicsContext3DCommandBufferImpl::getVertexAttribOffset(
+WGC3Dsizeiptr WebGraphicsContext3DGuest::getVertexAttribOffset(
     WGC3Duint index, WGC3Denum pname) {
   GLvoid* value = NULL;
   // NOTE: If pname is ever a value that returns more then 1 element
   // this will corrupt memory.
   gl_->GetVertexAttribPointerv(index, pname, &value);
   return static_cast<WGC3Dsizeiptr>(reinterpret_cast<intptr_t>(value));
 }
 
 DELEGATE_TO_GL_2(hint, Hint, WGC3Denum, WGC3Denum)
 
@@ skipping 16 matching lines @@
 DELEGATE_TO_GL_1(linkProgram, LinkProgram, WebGLId)
 
 DELEGATE_TO_GL_2(pixelStorei, PixelStorei, WGC3Denum, WGC3Dint)
 
 DELEGATE_TO_GL_2(polygonOffset, PolygonOffset, WGC3Dfloat, WGC3Dfloat)
 
 DELEGATE_TO_GL_7(readPixels, ReadPixels,
                  WGC3Dint, WGC3Dint, WGC3Dsizei, WGC3Dsizei, WGC3Denum,
                  WGC3Denum, void*)
 
-void WebGraphicsContext3DCommandBufferImpl::releaseShaderCompiler() {
+void WebGraphicsContext3DGuest::releaseShaderCompiler() {
 }
 
 DELEGATE_TO_GL_4(renderbufferStorage, RenderbufferStorage,
                  WGC3Denum, WGC3Denum, WGC3Dsizei, WGC3Dsizei)
 
 DELEGATE_TO_GL_2(sampleCoverage, SampleCoverage, WGC3Dfloat, WGC3Dboolean)
 
 DELEGATE_TO_GL_4(scissor, Scissor, WGC3Dint, WGC3Dint, WGC3Dsizei, WGC3Dsizei)
 
-void WebGraphicsContext3DCommandBufferImpl::shaderSource(
+void WebGraphicsContext3DGuest::shaderSource(
     WebGLId shader, const WGC3Dchar* string) {
   GLint length = strlen(string);
   gl_->ShaderSource(shader, 1, &string, &length);
 }
 
 DELEGATE_TO_GL_3(stencilFunc, StencilFunc, WGC3Denum, WGC3Dint, WGC3Duint)
 
 DELEGATE_TO_GL_4(stencilFuncSeparate, StencilFuncSeparate,
                  WGC3Denum, WGC3Denum, WGC3Dint, WGC3Duint)
 
@@ skipping 10 matching lines @@
 
 DELEGATE_TO_GL_9(texImage2D, TexImage2D,
                  WGC3Denum, WGC3Dint, WGC3Denum, WGC3Dsizei, WGC3Dsizei,
                  WGC3Dint, WGC3Denum, WGC3Denum, const void*)
 
 DELEGATE_TO_GL_3(texParameterf, TexParameterf,
                  WGC3Denum, WGC3Denum, WGC3Dfloat);
 
 static const unsigned int kTextureWrapR = 0x8072;
 
-void WebGraphicsContext3DCommandBufferImpl::texParameteri(
+void WebGraphicsContext3DGuest::texParameteri(
     WGC3Denum target, WGC3Denum pname, WGC3Dint param) {
   // TODO(kbr): figure out whether the setting of TEXTURE_WRAP_R in
   // GraphicsContext3D.cpp is strictly necessary to avoid seams at the
   // edge of cube maps, and, if it is, push it into the GLES2 service
   // side code.
   if (pname == kTextureWrapR) {
     return;
   }
   gl_->TexParameteri(target, pname, param);
 }
@@ skipping 70 matching lines @@
 
 DELEGATE_TO_GL_2(vertexAttrib3fv, VertexAttrib3fv, WGC3Duint,
                  const WGC3Dfloat*)
 
 DELEGATE_TO_GL_5(vertexAttrib4f, VertexAttrib4f, WGC3Duint,
                  WGC3Dfloat, WGC3Dfloat, WGC3Dfloat, WGC3Dfloat)
 
 DELEGATE_TO_GL_2(vertexAttrib4fv, VertexAttrib4fv, WGC3Duint,
                  const WGC3Dfloat*)
 
-void WebGraphicsContext3DCommandBufferImpl::vertexAttribPointer(
+void WebGraphicsContext3DGuest::vertexAttribPointer(
     WGC3Duint index, WGC3Dint size, WGC3Denum type, WGC3Dboolean normalized,
     WGC3Dsizei stride, WGC3Dintptr offset) {
   gl_->VertexAttribPointer(
       index, size, type, normalized, stride,
       reinterpret_cast<void*>(static_cast<intptr_t>(offset)));
 }
 
 DELEGATE_TO_GL_4(viewport, Viewport,
                  WGC3Dint, WGC3Dint, WGC3Dsizei, WGC3Dsizei)
 
-WebGLId WebGraphicsContext3DCommandBufferImpl::createBuffer() {
+WebGLId WebGraphicsContext3DGuest::createBuffer() {
   GLuint o;
   gl_->GenBuffers(1, &o);
   return o;
 }
 
-WebGLId WebGraphicsContext3DCommandBufferImpl::createFramebuffer() {
+WebGLId WebGraphicsContext3DGuest::createFramebuffer() {
   GLuint o = 0;
   gl_->GenFramebuffers(1, &o);
   return o;
 }
 
-WebGLId WebGraphicsContext3DCommandBufferImpl::createProgram() {
+WebGLId WebGraphicsContext3DGuest::createProgram() {
   return gl_->CreateProgram();
 }
 
-WebGLId WebGraphicsContext3DCommandBufferImpl::createRenderbuffer() {
+WebGLId WebGraphicsContext3DGuest::createRenderbuffer() {
   GLuint o;
   gl_->GenRenderbuffers(1, &o);
   return o;
 }
 
 DELEGATE_TO_GL_1R(createShader, CreateShader, WGC3Denum, WebGLId);
 
-WebGLId WebGraphicsContext3DCommandBufferImpl::createTexture() {
+WebGLId WebGraphicsContext3DGuest::createTexture() {
   GLuint o;
   gl_->GenTextures(1, &o);
   return o;
 }
 
-void WebGraphicsContext3DCommandBufferImpl::deleteBuffer(WebGLId buffer) {
+void WebGraphicsContext3DGuest::deleteBuffer(WebGLId buffer) {
   gl_->DeleteBuffers(1, &buffer);
 }
 
-void WebGraphicsContext3DCommandBufferImpl::deleteFramebuffer(
+void WebGraphicsContext3DGuest::deleteFramebuffer(
     WebGLId framebuffer) {
   gl_->DeleteFramebuffers(1, &framebuffer);
 }
 
-void WebGraphicsContext3DCommandBufferImpl::deleteProgram(WebGLId program) {
+void WebGraphicsContext3DGuest::deleteProgram(WebGLId program) {
   gl_->DeleteProgram(program);
 }
 
-void WebGraphicsContext3DCommandBufferImpl::deleteRenderbuffer(
+void WebGraphicsContext3DGuest::deleteRenderbuffer(
     WebGLId renderbuffer) {
   gl_->DeleteRenderbuffers(1, &renderbuffer);
 }
 
-void WebGraphicsContext3DCommandBufferImpl::deleteShader(WebGLId shader) {
+void WebGraphicsContext3DGuest::deleteShader(WebGLId shader) {
   gl_->DeleteShader(shader);
 }
 
-void WebGraphicsContext3DCommandBufferImpl::deleteTexture(WebGLId texture) {
+void WebGraphicsContext3DGuest::deleteTexture(WebGLId texture) {
   gl_->DeleteTextures(1, &texture);
 }
 
-bool WebGraphicsContext3DCommandBufferImpl::ShouldUseSwapClient() {
-  GpuChannelHostFactory* factory = GpuChannelHostFactory::instance();
-  return factory && factory->IsMainThread() && swap_client_.get();
-}
-
-void WebGraphicsContext3DCommandBufferImpl::OnSwapBuffersComplete() {
-  typedef WebGraphicsContext3DSwapBuffersClient WGC3DSwapClient;
+void WebGraphicsContext3DGuest::OnSwapBuffersComplete() {
   // This may be called after tear-down of the RenderView.
-  if (ShouldUseSwapClient()) {
-    MessageLoop::current()->PostTask(FROM_HERE, base::Bind(
-        &WGC3DSwapClient::OnViewContextSwapBuffersComplete, swap_client_));
+  RenderViewImpl* renderview =
+      web_view_ ? RenderViewImpl::FromWebView(web_view_) : NULL;
+  if (renderview) {
+    MessageLoop::current()->PostTask(
+        FROM_HERE,
+        base::Bind(&RenderViewImpl::OnViewContextSwapBuffersComplete,
+                   renderview));
   }
 
   if (swapbuffers_complete_callback_)
     swapbuffers_complete_callback_->onSwapBuffersComplete();
 }
 
-void WebGraphicsContext3DCommandBufferImpl::OnMemoryAllocationChanged(
-    const GpuMemoryAllocation& allocation) {
-  if (memory_allocation_changed_callback_)
-    memory_allocation_changed_callback_->onMemoryAllocationChanged(
-        allocation.gpu_resource_size_in_bytes);
-}
-
-void WebGraphicsContext3DCommandBufferImpl::setErrorMessageCallback(
-    WebGraphicsContext3D::WebGraphicsErrorMessageCallback* cb) {
-  error_message_callback_ = cb;
-}
-
-void WebGraphicsContext3DCommandBufferImpl::setContextLostCallback(
+void WebGraphicsContext3DGuest::setContextLostCallback(
     WebGraphicsContext3D::WebGraphicsContextLostCallback* cb) {
   context_lost_callback_ = cb;
 }
 
-WGC3Denum WebGraphicsContext3DCommandBufferImpl::getGraphicsResetStatusARB() {
-  if (context_->IsCommandBufferContextLost() &&
-      context_lost_reason_ == GL_NO_ERROR) {
-    return GL_UNKNOWN_CONTEXT_RESET_ARB;
-  }
-
-  return context_lost_reason_;
+WGC3Denum WebGraphicsContext3DGuest::getGraphicsResetStatusARB() {
+  return dead_ ? GL_UNKNOWN_CONTEXT_RESET_ARB : GL_NO_ERROR;
 }
 
-void WebGraphicsContext3DCommandBufferImpl::
+void WebGraphicsContext3DGuest::
     setSwapBuffersCompleteCallbackCHROMIUM(
     WebGraphicsContext3D::WebGraphicsSwapBuffersCompleteCallbackCHROMIUM* cb) {
   swapbuffers_complete_callback_ = cb;
 }
 
 DELEGATE_TO_GL_5(texImageIOSurface2DCHROMIUM, TexImageIOSurface2DCHROMIUM,
                  WGC3Denum, WGC3Dint, WGC3Dint, WGC3Duint, WGC3Duint)
 
 DELEGATE_TO_GL_5(texStorage2DEXT, TexStorage2DEXT,
                  WGC3Denum, WGC3Dint, WGC3Duint, WGC3Dint, WGC3Dint)
 
-#if WEBKIT_USING_SKIA
-GrGLInterface* WebGraphicsContext3DCommandBufferImpl::onCreateGrGLInterface() {
-  return webkit_glue::CreateCommandBufferSkiaGLBinding();
-}
-#endif
-
-namespace {
-
-WGC3Denum convertReason(ContentGLContext::ContextLostReason reason) {
-  switch (reason) {
-  case ContentGLContext::kGuilty:
-    return GL_GUILTY_CONTEXT_RESET_ARB;
-  case ContentGLContext::kInnocent:
-    return GL_INNOCENT_CONTEXT_RESET_ARB;
-  case ContentGLContext::kUnknown:
-    return GL_UNKNOWN_CONTEXT_RESET_ARB;
-  }
-
-  NOTREACHED();
-  return GL_UNKNOWN_CONTEXT_RESET_ARB;
-}
-
-}  // anonymous namespace
-
-void WebGraphicsContext3DCommandBufferImpl::OnContextLost(
-    ContentGLContext::ContextLostReason reason) {
-  context_lost_reason_ = convertReason(reason);
-  if (context_lost_callback_) {
-    context_lost_callback_->onContextLost();
-  }
-  if (attributes_.shareResources)
-    ClearSharedContexts();
-  if (ShouldUseSwapClient())
-    swap_client_->OnViewContextSwapBuffersAborted();
-}
-
-void WebGraphicsContext3DCommandBufferImpl::OnErrorMessage(
-    const std::string& message, int id) {
-  if (error_message_callback_) {
-    WebKit::WebString str = WebKit::WebString::fromUTF8(message.c_str());
-    error_message_callback_->onErrorMessage(str, id);
+void WebGraphicsContext3DGuest::OnContextLost() {
+  fprintf(stderr, ">>>>%s\n", __PRETTY_FUNCTION__);
+  RenderViewImpl* renderview =
+      web_view_ ? RenderViewImpl::FromWebView(web_view_) : NULL;
+  if (renderview) {
+    fprintf(stderr, ">>>Found a renderview\n");
+    renderview->OnViewContextSwapBuffersAborted();
   }
 }
 
+#endif  // defined(ENABLE_GPU)