Remove VirtualGLApi

ui/gl/gl_gl_api_implementation.cc

Index: ui/gl/gl_gl_api_implementation.cc
diff --git a/ui/gl/gl_gl_api_implementation.cc b/ui/gl/gl_gl_api_implementation.cc
index 7d2210a548e1efe5a13cdb44f081976d9a11d71d..3ef10a54dc51cd73f82aa9c15d88535e3f1f98fa 100644
--- a/ui/gl/gl_gl_api_implementation.cc
+++ b/ui/gl/gl_gl_api_implementation.cc
@@ -521,14 +521,6 @@ const GLubyte* RealGLApi::glGetStringiFn(GLenum name, GLuint index) {
   return GLApiBase::glGetStringiFn(name, index);
 }
 
-void RealGLApi::glFlushFn() {
-  GLApiBase::glFlushFn();
-}
-
-void RealGLApi::glFinishFn() {
-  GLApiBase::glFinishFn();
-}
-
 void RealGLApi::InitializeFilteredExtensions() {
   if (disabled_exts_.size()) {
     filtered_exts_.clear();
@@ -566,126 +558,4 @@ NoContextGLApi::NoContextGLApi() {
 NoContextGLApi::~NoContextGLApi() {
 }
 
-VirtualGLApi::VirtualGLApi()
-    : real_context_(NULL),
-      current_context_(NULL) {
-}
-
-VirtualGLApi::~VirtualGLApi() {
-}
-
-void VirtualGLApi::Initialize(DriverGL* driver, GLContext* real_context) {
-  InitializeBase(driver);
-  real_context_ = real_context;
-
-  DCHECK(real_context->IsCurrent(NULL));
-  extensions_ = real_context->GetExtensions();
-  extensions_vec_ = base::SplitString(extensions_, " ", base::TRIM_WHITESPACE,
-                                      base::SPLIT_WANT_ALL);
-}
-
-bool VirtualGLApi::MakeCurrent(GLContext* virtual_context, GLSurface* surface) {
-  bool switched_contexts = g_current_gl_context_tls->Get() != this;
-  GLSurface* current_surface = GLSurface::GetCurrent();
-  if (switched_contexts || surface != current_surface) {
-    // MakeCurrent 'lite' path that avoids potentially expensive MakeCurrent()
-    // calls if the GLSurface uses the same underlying surface or renders to
-    // an FBO.
-    if (switched_contexts || !current_surface ||
-        !virtual_context->IsCurrent(surface)) {
-      if (!real_context_->MakeCurrent(surface)) {
-        return false;
-      }
-    }
-  }
-
-  DCHECK_EQ(real_context_, GLContext::GetRealCurrent());
-  DCHECK(real_context_->IsCurrent(NULL));
-  DCHECK(virtual_context->IsCurrent(surface));
-
-  if (switched_contexts || virtual_context != current_context_) {
-#if DCHECK_IS_ON()
-    GLenum error = glGetErrorFn();
-    // Accepting a context loss error here enables using debug mode to work on
-    // context loss handling in virtual context mode.
-    // There should be no other errors from the previous context leaking into
-    // the new context.
-    DCHECK(error == GL_NO_ERROR || error == GL_CONTEXT_LOST_KHR) <<
-        "GL error was: " << error;
-#endif
-
-    // Set all state that is different from the real state
-    GLApi* temp = GetCurrentGLApi();
-    SetGLToRealGLApi();
-    if (virtual_context->GetGLStateRestorer()->IsInitialized()) {
-      GLStateRestorer* virtual_state = virtual_context->GetGLStateRestorer();
-      GLStateRestorer* current_state = current_context_ ?
-                                       current_context_->GetGLStateRestorer() :
-                                       nullptr;
-      if (switched_contexts || virtual_context != current_context_) {
-        if (current_state)
-          current_state->PauseQueries();
-        virtual_state->ResumeQueries();
-      }
-
-      virtual_state->RestoreState(
-          (current_state && !switched_contexts) ? current_state : NULL);
-    }
-    SetGLApi(temp);
-    current_context_ = virtual_context;
-  }
-  SetGLApi(this);
-
-  virtual_context->SetCurrent(surface);
-  if (!surface->OnMakeCurrent(virtual_context)) {
-    LOG(ERROR) << "Could not make GLSurface current.";
-    return false;
-  }
-  return true;
-}
-
-void VirtualGLApi::OnReleaseVirtuallyCurrent(GLContext* virtual_context) {
-  if (current_context_ == virtual_context)
-    current_context_ = NULL;
-}
-
-void VirtualGLApi::glGetIntegervFn(GLenum pname, GLint* params) {
-  switch (pname) {
-    case GL_NUM_EXTENSIONS:
-      *params = static_cast<GLint>(extensions_vec_.size());
-      break;
-    default:
-      driver_->fn.glGetIntegervFn(pname, params);
-      break;
-  }
-}
-
-const GLubyte* VirtualGLApi::glGetStringFn(GLenum name) {
-  switch (name) {
-    case GL_EXTENSIONS:
-      return reinterpret_cast<const GLubyte*>(extensions_.c_str());
-    default:
-      return driver_->fn.glGetStringFn(name);
-  }
-}
-
-const GLubyte* VirtualGLApi::glGetStringiFn(GLenum name, GLuint index) {
-  switch (name) {
-    case GL_EXTENSIONS:
-      if (index >= extensions_vec_.size())
-        return NULL;
-      return reinterpret_cast<const GLubyte*>(extensions_vec_[index].c_str());
-    default:
-      return driver_->fn.glGetStringiFn(name, index);
-  }
-}
-
-void VirtualGLApi::glFlushFn() {
-  GLApiBase::glFlushFn();
-}
-
-void VirtualGLApi::glFinishFn() {
-  GLApiBase::glFinishFn();
-}
-
 }  // namespace gl