gpu: Add support for GLX_EXT_texture_from_pixmap extension.

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 bc1485a94d8567005dce5c9d1c241164945355ec..dfdc5ee847386849e9dbda0e1690f0206096dd84 100644
--- a/gpu/command_buffer/common/gles2_cmd_format_test_autogen.h
+++ b/gpu/command_buffer/common/gles2_cmd_format_test_autogen.h
@@ -3996,5 +3996,20 @@ TEST_F(GLES2FormatTest, ConsumeTextureCHROMIUMImmediate) {
   // TODO(gman): Check that data was inserted;
 }
 
+TEST_F(GLES2FormatTest, TexImagePixmap2DCHROMIUM) {
+  TexImagePixmap2DCHROMIUM& cmd = *GetBufferAs<TexImagePixmap2DCHROMIUM>();
+  void* next_cmd = cmd.Set(
+      &cmd,
+      static_cast<GLenum>(11),
+      static_cast<GLuint>(12));
+  EXPECT_EQ(static_cast<uint32>(TexImagePixmap2DCHROMIUM::kCmdId),
+            cmd.header.command);
+  EXPECT_EQ(sizeof(cmd), cmd.header.size * 4u);
+  EXPECT_EQ(static_cast<GLenum>(11), cmd.target);
+  EXPECT_EQ(static_cast<GLuint>(12), cmd.pixmapId);
+  CheckBytesWrittenMatchesExpectedSize(
+      next_cmd, sizeof(cmd));
+}
+
 #endif  // GPU_COMMAND_BUFFER_COMMON_GLES2_CMD_FORMAT_TEST_AUTOGEN_H_