fix: compilation error when disabling extensions and pdf_viewer

[wujinli]

Description of Change

here we fix the compile error:

// args.gn file
enable_electron_extensions=false
enable_pdf_viewer=false

Checklist

• PR description included and stakeholders cc'd
• npm test passes
• tests are changed or added
• relevant API documentation, tutorials, and examples are updated and follow the documentation style guide
• PR release notes describe the change in a way relevant to app developers, and are capitalized, punctuated, and past tense.

Release Notes

Notes: Fixed compilation error when disabling extensions and pdf_viewer

[wujinli]

@codebytere Hi, Please help to trigger tests again. Changes: Syntax formatting

[wujinli]

The test failure is due to infrastructure issues. Please help fix this.
In fact, most architectures have already passed the tests, except for the linux-arm64 mocha tests, which proves that there are no issues with this commit. Therefore, you can skip the tests and merge directly.

[wujinli]

@codebytere @dsanders11 Can someone help me sort it out?

[jkleinsc]

Looks good to me, just needs a small change on the comment

[wujinli]

Looks good to me, just needs a small change on the comment

@jkleinsc Done. At the same time, another original error in the same file is also corrected.

[wujinli]

The test failure is not related to this commit.

[release-clerk]

Release Notes Persisted

Fixed compilation error when disabling extensions and pdf_viewer

[trop]

I have automatically backported this PR to "38-x-y", please check out #47993

[trop]

I have automatically backported this PR to "37-x-y", please check out #47994