Make all the readonly attributes in Device Capabilities valid.

[scuxiayiqian]

Bug = XWALK-2162

[crosswalk-trybot]

Testing patch series with scuxiayiqian/crosswalk@009d1de as its head.

Bot	Status
Crosswalk Tizen IVI	[FAILED 💔](https://build.crosswalk-project.org/try/builders/Crosswalk Tizen IVI/builds/1697)
Crosswalk Tizen 3 Common	[SUCCESS 💚](https://build.crosswalk-project.org/try/builders/Crosswalk Tizen 3 Common/builds/1292)
Crosswalk Android-X86	[SUCCESS 💚](https://build.crosswalk-project.org/try/builders/Crosswalk Android-X86/builds/1706)
Crosswalk Tizen 3 Mobile	[FAILED 💔](https://build.crosswalk-project.org/try/builders/Crosswalk Tizen 3 Mobile/builds/1710)
Crosswalk Linux	[FAILED 💔](https://build.crosswalk-project.org/try/builders/Crosswalk Linux/builds/1706)

[halton]

nice patch, could you force update and push again (without any change) to retrigger the trybot?

[halton]

And please do same thing for android part, src/runtime/android/core_internal/src/org/xwalk/core/internal/extension/api/device_capabilities/device_capabilities_api.js

[kygx-legend]

@halton , I think in Android part it is already made read-only. In Tizen part, it is integrated at common.js and someone forgot to make them read-only.

[halton]

@legendlee1314 thanks for let me know.

[crosswalk-trybot]

Testing patch series with scuxiayiqian/crosswalk@c8a9a68 as its head.

Bot	Status
Crosswalk Tizen IVI	[FAILED 💔](https://build.crosswalk-project.org/try/builders/Crosswalk Tizen IVI/builds/1705)
Crosswalk Tizen 3 Common	[SUCCESS 💚](https://build.crosswalk-project.org/try/builders/Crosswalk Tizen 3 Common/builds/1300)
Crosswalk Android-X86	[SUCCESS 💚](https://build.crosswalk-project.org/try/builders/Crosswalk Android-X86/builds/1714)
Crosswalk Tizen 3 Mobile	[SUCCESS 💚](https://build.crosswalk-project.org/try/builders/Crosswalk Tizen 3 Mobile/builds/1718)
Crosswalk Linux	[FAILED 💔](https://build.crosswalk-project.org/try/builders/Crosswalk Linux/builds/1714)

[halton]

hi @scuxiayiqian please squash your two commits.

[crosswalk-trybot]

Testing patch series with scuxiayiqian/crosswalk@2bbf490 as its head.

Bot	Status
Crosswalk Tizen IVI	[FAILED 💔](https://build.crosswalk-project.org/try/builders/Crosswalk Tizen IVI/builds/1706)
Crosswalk Linux	[FAILED 💔](https://build.crosswalk-project.org/try/builders/Crosswalk Linux/builds/1715)
Crosswalk Android-X86	[SUCCESS 💚](https://build.crosswalk-project.org/try/builders/Crosswalk Android-X86/builds/1715)
Crosswalk Tizen 3 Mobile	[SUCCESS 💚](https://build.crosswalk-project.org/try/builders/Crosswalk Tizen 3 Mobile/builds/1719)
Crosswalk Tizen 3 Common	[SUCCESS 💚](https://build.crosswalk-project.org/try/builders/Crosswalk Tizen 3 Common/builds/1301)

[crosswalk-trybot]

Testing patch series with scuxiayiqian/crosswalk@63824f0 as its head.

Bot	Status
Crosswalk Tizen IVI	[FAILED 💔](https://build.crosswalk-project.org/try/builders/Crosswalk Tizen IVI/builds/1750)
Crosswalk Tizen 3 Common	[FAILED 💔](https://build.crosswalk-project.org/try/builders/Crosswalk Tizen 3 Common/builds/1348)
Crosswalk Android-X86	[FAILED 💔](https://build.crosswalk-project.org/try/builders/Crosswalk Android-X86/builds/1759)
Crosswalk Tizen 3 Mobile	[FAILED 💔](https://build.crosswalk-project.org/try/builders/Crosswalk Tizen 3 Mobile/builds/1764)
Crosswalk Linux	[FAILED 💔](https://build.crosswalk-project.org/try/builders/Crosswalk Linux/builds/1759)

[halton]

lgtm, will merge when trybot get green.

[halton]

@legendlee1314 please retrigger the trybot.

[kygx-legend]

This is not my PR. I don't know how to do that.

[halton]

oh do you know is @scuxiayiqian still available?

[kygx-legend]

She is on leave for school courses now.

[halton]

Then could you fork this work and submit a new one?

[kygx-legend]

Sure.

[halton]

Close since dup with #2355