Update from https://crrev.com/318214

gpu/command_buffer/client/gles2_implementation.cc

Index: gpu/command_buffer/client/gles2_implementation.cc
diff --git a/gpu/command_buffer/client/gles2_implementation.cc b/gpu/command_buffer/client/gles2_implementation.cc
index 2dd95ec410850613d8279ef3ba12b7d0bb884469..59385241e5c89526420ceda1fd8c50d75fc050b1 100644
--- a/gpu/command_buffer/client/gles2_implementation.cc
+++ b/gpu/command_buffer/client/gles2_implementation.cc
@@ -747,6 +747,33 @@ bool GLES2Implementation::GetInternalformativHelper(
   return false;
 }
 
+bool GLES2Implementation::GetSyncivHelper(
+    GLsync sync, GLenum pname, GLsizei bufsize, GLsizei* length,
+    GLint* values) {
+  GLint value = 0;
+  switch (pname) {
+    case GL_OBJECT_TYPE:
+      value = GL_SYNC_FENCE;
+      break;
+    case GL_SYNC_CONDITION:
+      value = GL_SYNC_GPU_COMMANDS_COMPLETE;
+      break;
+    case GL_SYNC_FLAGS:
+      value = 0;
+      break;
+    default:
+      return false;
+  }
+  if (bufsize > 0) {
+    DCHECK(values);
+    *values = value;
+  }
+  if (length) {
+    *length = 1;
+  }
+  return true;
+}
+
 GLuint GLES2Implementation::GetMaxValueInBufferCHROMIUMHelper(
     GLuint buffer_id, GLsizei count, GLenum type, GLuint offset) {
   typedef cmds::GetMaxValueInBufferCHROMIUM::Result Result;