chromium: fix various build errors

[TonyTascioglu]

Fix several errors during build due to stricter clang builds.

• unused variable error in harfbuzz third party dependency
• missing include in ruy third party dependency
• virtualcursor error in sql/recover_module/cursor.cc

The third party fixes are back-ported from upstream. The virtualcursor patch is from ungoogled-chromium.

Fixes #517

Signed-off-by: Tony Tascioglu tony.tascioglu@windriver.com

[msisov]

Can you please specify what yocto branch and toolchains require these changes?

[schnitzeltony]

What happened to this one? Have it in my builds to fix breaks with latest meta-clang

[kraj]

I have bundled this pull into https://github.com/OSSystems/meta-browser/pull/529

[otavio]

@TonyTascioglu as @kraj has bundled it with #529, I am closing this PR and any further discussion about it should be moved there.