Enable valid tests and remove unavailable tests

Enable valid tests and remove unavailable tests

Now valid tests:
  - WorkerTest except ones using SharedWorkers
  - MediaSourceTest.ConfigChangeVideo
  - CrossPlatformAccessibilityBrowserTest
  - ResourceDispatcherHostBrowserTest.SyncXMLHttpRequest_DuringUnload
  - ResourceDispatcherHostBrowserTest.CrossSiteAfterCrash
  - RenderFrameHostManagerTest.ProcessExitWithSwappedOutViews
  - ScreenOrientationBrowserTest
  - RenderViewHostTest.BaseURLParam
  - FileSystemBrowserTestWithLowQuota.QuotaTest
  - ChildProcessSecurityPolicyInProcessBrowserTest.NoLeak
  - DomSerializerTests
  - BookmarkletTest.NonEmptyResult
  - SignalTest
  - TracingControllerTest.EnableCaptureAndDisableMonitoring
  - TracingControllerTest.EnableCaptureAndDisableMonitoringWithFilePath
  - FrameTreeBrowserTest.NavigateWithLeftoverFrames

And unavailable tests:
  - WebGLConformanceTest
  - MessagePortTest
  - OffTheRecordClipboardTest
  - GpuPixelBrowserTest
  - RendererAccessibilityTest.EditableTextModeFocusEvents
  - RendererAccessibilityTest.EditableTextModeFocusNotifications
  - RenderWidgetTest.OnMsgPaintAtSize
  - PasswordFormConversionUtilsTest.ValidWebFormElementToPasswordForm
  - PasswordFormConversionUtilsTest.InvalidWebFormElementToPasswordForm
  - RenderWidgetHostBrowserTest.GetSnapshotFromRendererTest
  - BrowserGpuChannelHostFactoryTest

BUG=461624, 256238, 338408, 338411, 341995
Committed: https://crrev.com/f123c1b04766936776b72bbc98e8bd823bb6d684
Cr-Commit-Position: refs/heads/master@{#318633}

[Jaekyun Seok (inactive), 2015-02-26 05:16:08]

jaekyun@chromium.org changed reviewers:
+ sievers@chromium.org

[Jaekyun Seok (inactive), 2015-02-26 05:16:09]

Please review this CL.

[Xianzhu, 2015-02-26 17:03:57]

wangxianzhu@chromium.org changed reviewers:
+ wangxianzhu@chromium.org

[Xianzhu, 2015-02-26 17:03:58]

lgtm

[no sievers, 2015-02-27 20:08:35]

LGTM

[Jaekyun Seok (inactive), 2015-03-01 21:58:32]

The CQ bit was checked by jaekyun@chromium.org

[commit-bot: I haz the power, 2015-03-01 21:59:16]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/952293004/70001

[commit-bot: I haz the power, 2015-03-01 22:53:27]

Committed patchset #5 (id:70001)

[commit-bot: I haz the power, 2015-03-01 22:54:21]

Patchset 5 (id:??) landed as
https://crrev.com/f123c1b04766936776b72bbc98e8bd823bb6d684
Cr-Commit-Position: refs/heads/master@{#318633}