Update from https://crrev.com/308331

gpu/command_buffer/client/gles2_implementation.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.
 
 // A class to emulate GLES2 over command buffers.
 
 #include "gpu/command_buffer/client/gles2_implementation.h"
 
 #include <GLES2/gl2ext.h>
 #include <GLES2/gl2extchromium.h>
@@ skipping 2296 matching lines @@
 
 void GLES2Implementation::GenQueriesEXTHelper(
     GLsizei /* n */, const GLuint* /* queries */) {
 }
 
 void GLES2Implementation::GenValuebuffersCHROMIUMHelper(
     GLsizei /* n */,
     const GLuint* /* valuebuffers */) {
 }
 
+void GLES2Implementation::GenSamplersHelper(
+    GLsizei /* n */, const GLuint* /* samplers */) {
+}
+
+void GLES2Implementation::GenTransformFeedbacksHelper(
+    GLsizei /* n */, const GLuint* /* transformfeedbacks */) {
+}
+
 // NOTE #1: On old versions of OpenGL, calling glBindXXX with an unused id
 // generates a new resource. On newer versions of OpenGL they don't. The code
 // related to binding below will need to change if we switch to the new OpenGL
 // model. Specifically it assumes a bind will succeed which is always true in
 // the old model but possibly not true in the new model if another context has
 // deleted the resource.
 
 void GLES2Implementation::BindBufferHelper(
     GLenum target, GLuint buffer_id) {
   // TODO(gman): See note #1 above.
@@ skipping 350 matching lines @@
                "id not created by this context.");
     return;
   }
   for (GLsizei ii = 0; ii < n; ++ii) {
     if (valuebuffers[ii] == bound_valuebuffer_) {
       bound_valuebuffer_ = 0;
     }
   }
 }
 
+void GLES2Implementation::DeleteSamplersStub(
+    GLsizei n, const GLuint* samplers) {
+  helper_->DeleteSamplersImmediate(n, samplers);
+}
+
+void GLES2Implementation::DeleteSamplersHelper(
+    GLsizei n, const GLuint* samplers) {
+  if (!GetIdHandler(id_namespaces::kSamplers)->FreeIds(
+      this, n, samplers, &GLES2Implementation::DeleteSamplersStub)) {
+    SetGLError(
+        GL_INVALID_VALUE,
+        "glDeleteSamplers", "id not created by this context.");
+    return;
+  }
+}
+
+void GLES2Implementation::DeleteTransformFeedbacksStub(
+    GLsizei n, const GLuint* transformfeedbacks) {
+  helper_->DeleteTransformFeedbacksImmediate(n, transformfeedbacks);
+}
+
+void GLES2Implementation::DeleteTransformFeedbacksHelper(
+    GLsizei n, const GLuint* transformfeedbacks) {
+  if (!GetIdHandler(id_namespaces::kTransformFeedbacks)->FreeIds(
+      this, n, transformfeedbacks,
+      &GLES2Implementation::DeleteTransformFeedbacksStub)) {
+    SetGLError(
+        GL_INVALID_VALUE,
+        "glDeleteTransformFeedbacks", "id not created by this context.");
+    return;
+  }
+}
+
 void GLES2Implementation::DeleteValuebuffersCHROMIUMStub(
     GLsizei n,
     const GLuint* valuebuffers) {
   helper_->DeleteValuebuffersCHROMIUMImmediate(n, valuebuffers);
 }
 
 void GLES2Implementation::DisableVertexAttribArray(GLuint index) {
   GPU_CLIENT_SINGLE_THREAD_CHECK();
   GPU_CLIENT_LOG(
       "[" << GetLogPrefix() << "] glDisableVertexAttribArray(" << index << ")");
@@ skipping 1281 matching lines @@
     SetGLError(GL_INVALID_VALUE, func, "offset < 0");
     return false;
   }
   if (!FitInt32NonNegative<GLintptr>(offset)) {
     SetGLError(GL_INVALID_OPERATION, func, "offset more than 32-bit");
     return false;
   }
   return true;
 }
 
+bool GLES2Implementation::GetSamplerParameterfvHelper(
+    GLuint /* sampler */, GLenum /* pname */, GLfloat* /* params */) {
+  // TODO(zmo): Implement client side caching.
+  return false;
+}
+
+bool GLES2Implementation::GetSamplerParameterivHelper(
+    GLuint /* sampler */, GLenum /* pname */, GLint* /* params */) {
+  // TODO(zmo): Implement client side caching.
+  return false;
+}
+
 // Include the auto-generated part of this file. We split this because it means
 // we can easily edit the non-auto generated parts right here in this file
 // instead of having to edit some template or the code generator.
 #include "gpu/command_buffer/client/gles2_implementation_impl_autogen.h"
 
 }  // namespace gles2
 }  // namespace gpu