Add glClientWaitSync to GPU command buffer.

gpu/command_buffer/common/gles2_cmd_format_test_autogen.h

Index: gpu/command_buffer/common/gles2_cmd_format_test_autogen.h
diff --git a/gpu/command_buffer/common/gles2_cmd_format_test_autogen.h b/gpu/command_buffer/common/gles2_cmd_format_test_autogen.h
index a89683a32124490eafec84e3a1bf492f5eaedf6d..75026182301f54a0b88ba0465f6a1011150f9abe 100644
--- a/gpu/command_buffer/common/gles2_cmd_format_test_autogen.h
+++ b/gpu/command_buffer/common/gles2_cmd_format_test_autogen.h
@@ -394,6 +394,23 @@ TEST_F(GLES2FormatTest, ClearStencil) {
   CheckBytesWrittenMatchesExpectedSize(next_cmd, sizeof(cmd));
 }
 
+TEST_F(GLES2FormatTest, ClientWaitSync) {
+  cmds::ClientWaitSync& cmd = *GetBufferAs<cmds::ClientWaitSync>();
+  void* next_cmd =
+      cmd.Set(&cmd, static_cast<GLuint>(11), static_cast<GLuint>(12),
+              static_cast<GLuint>(13), static_cast<uint32_t>(14),
+              static_cast<uint32_t>(15));
+  EXPECT_EQ(static_cast<uint32_t>(cmds::ClientWaitSync::kCmdId),
+            cmd.header.command);
+  EXPECT_EQ(sizeof(cmd), cmd.header.size * 4u);
+  EXPECT_EQ(static_cast<GLuint>(11), cmd.sync);
+  EXPECT_EQ(static_cast<GLuint>(12), cmd.timeout_0);
+  EXPECT_EQ(static_cast<GLuint>(13), cmd.timeout_1);
+  EXPECT_EQ(static_cast<uint32_t>(14), cmd.result_shm_id);
+  EXPECT_EQ(static_cast<uint32_t>(15), cmd.result_shm_offset);
+  CheckBytesWrittenMatchesExpectedSize(next_cmd, sizeof(cmd));
+}
+
 TEST_F(GLES2FormatTest, ColorMask) {
   cmds::ColorMask& cmd = *GetBufferAs<cmds::ColorMask>();
   void* next_cmd =