[webapi] Integrate 75 tests for FileWriterAPI

- approved: 18, designed: 57

Impacted tests(approved): new 18, update 0, delete 0
Unit test platform: [IVI] crosswalk-10.38.222, t-e-c 0.107
Unit test result summary: pass 18, fail 0, block 0
[wrt] Move google play suite to crosswalk-test-suite/wrt/
[misc]rename the test suite name
[Detailed commit message (if have)]
Unit test platform: [Tizen]
Test Result: pack to wgt and run tcs pass 3, fail 1, block 0
Merge pull request #1168 from linshen/shenlin/update-testsuite-name

[misc]rename the test suite name
Merge pull request #1166 from xinliux/filewriterapi-integrate

[webapi] Integrate 75 tests for FileWriterAPI
Merge pull request #1167 from Honry/mv-google-play

[wrt] Move google play suite to crosswalk-test-suite/wrt/
[stability] Move 10 stability suites to crosswalk-test-suite/stability/
[wrt] update common
[Detailed commit message (if have)]
Impacted TCs num(approved): New 0, update 25 , deleted 0
Unit test platform: [Tizen]
Test Result: Pass 20, fail 4, block 1
BugID: https://crosswalk-project.org/jira/browse/XWALK-2812
Merge pull request #1170 from linshen/shenlin/update-tct

[wrt] update common
[webapi] Integrate 161 tests for Web Audio

- Update window.AudioContext to new AudioContext()
- approved: 113, designed: 48

Impacted tests(approved): new 113, update 0, delete 0
Unit test platform: [IVI] crosswalk-10.38.222, t-e-c 0.107
Unit test result summary: pass 113, fail 0, block 0
[webapi] Integrate 192 tests for webdatabase

 -  designed: 89, approved: 103

Impacted tests(approved): new 103, update 0, delete 0
Unit test platform: [Tizen IVI][Android]
Unit test result summary: pass 103, fail 0, block 0
Merge pull request #1173 from yunxiaoxie/move-webdatabase

[webapi] Integrate 192 tests for webdatabase
Merge pull request #1171 from xinliux/webaudio-integrate

[webapi] Integrate 161 tests for Web Audio
[wrt][xwalk-2706/2391] Add 9 automation TCs to wrt

Impacted TCs num(approved): New 9, Update 0, Delete 0
Unit test Platform: Android
Android test result summary: Pass 9, Fail 0, Block 0
Merge pull request #1163 from Honry/move-stability-suite

[stability] Move 10 stability test suites to crosswalk-test-suite/stabil...
Merge pull request #1174 from wanghongjuan/wrt/packertool2

[wrt][xwalk-2706/2391] Add 9 automation TCs to wrt
[webapi] Integrate 20 tests for CSS3 Flexible Box

- approved 11
- 9 upstream cases have been integrated before

Impacted tests(approved): new 11, update 0, delete 0
Unit test platform: [android] crosswalk-10.38.222
Unit test result summary: pass 11, fail 0, block 0
[webapi] Integrate 11 tests for W3C Device Orientation Event

- approved: 11

Impacted tests(approved): new 11, update 0, delete 0
Unit test platform: [android] crosswalk-10.38.222
Unit test result summary: pass 11, fail 0, block 0
[webapi] Integrate 259 tests for IndexedDB

 - designed: 1, approved: 258
 - about 9 tests have been deleted

Impacted tests(approved): new 256, update 2, delete 0
Unit test platform: [Tizen IVI][Android]
Unit test result summary: pass 258, fail 0, block 0
Merge pull request #1175 from xinliux/flexiblebox-integrate

[webapi] Integrate 20 tests for CSS3 Flexible Box