Revert of cc: Make scheduling be driven by vsync for android webview.

Revert of cc: Make scheduling be driven by vsync for android webview. (patchset #38 id:740001 of https://codereview.chromium.org/817603002/)

Reason for revert:
Causes a webview test to fail.
http://build.chromium.org/p/chromium.linux/builders/Android%20Tests/builds/19230

Original issue's description:
> cc: Make scheduling be driven by vsync for android webview.
>
> This CL makes android webview use the similar mechanisms for
> scheduling as other platforms instead of using special
> polling code in the scheduler.
>
> Design Doc: https://docs.google.com/a/chromium.org/document/d/1w5UiuA2uZcAiU9-1Y23bxXaStUThkAK8wHI4ULqho2Y/edit#
>
> BUG=439275
>
> Committed: https://crrev.com/bf27da634790bb6eecf4b89f278cfd55c5e5d1f3
> Cr-Commit-Position: refs/heads/master@{#323361}

TBR=brianderson@chromium.org,boliu@chromium.org,enne@chromium.org,danakj@chromium.org,hush@chromium.org,mithro@mithis.com,jdduke@chromium.org,sievers@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=439275
Committed: https://crrev.com/894faa608876e34f9b20ed101ab7aca69de10d15
Cr-Commit-Position: refs/heads/master@{#323415}

[sunnyps, 2015-04-02 03:03:21]

Created Revert of cc: Make scheduling be driven by vsync for android webview.

[sunnyps, 2015-04-02 03:03:35]

The CQ bit was unchecked by sunnyps@chromium.org

[mithro-old, 2015-04-02 03:05:03]

The CQ bit was checked by mithro@mithis.com

[mithro-old, 2015-04-02 03:05:04]

lgtm

[boliu, 2015-04-02 03:05:37]

On 2015/04/02 03:05:04, mithro wrote:
> lgtm

following run passed..

[commit-bot: I haz the power, 2015-04-02 03:05:52]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1055743002/1

[sunnyps, 2015-04-02 03:06:22]

On 2015/04/02 03:05:37, boliu wrote:
> On 2015/04/02 03:05:04, mithro wrote:
> > lgtm
> 
> following run passed..

That run had the earlier revert.

[commit-bot: I haz the power, 2015-04-02 03:07:38]

Committed patchset #1 (id:1)

[boliu, 2015-04-02 03:09:48]

Java stack from test

fdb7f:  04-02 01:13:39.759 18237 18237 E AndroidRuntime:
junit.framework.AssertionFailedError: expected:<-65536> but was:<-16776961>
fdb7f:  04-02 01:13:39.759 18237 18237 E AndroidRuntime: 	at
junit.framework.Assert.fail(Assert.java:50)
fdb7f:  04-02 01:13:39.759 18237 18237 E AndroidRuntime: 	at
junit.framework.Assert.failNotEquals(Assert.java:287)
fdb7f:  04-02 01:13:39.759 18237 18237 E AndroidRuntime: 	at
junit.framework.Assert.assertEquals(Assert.java:67)
fdb7f:  04-02 01:13:39.759 18237 18237 E AndroidRuntime: 	at
junit.framework.Assert.assertEquals(Assert.java:199)
fdb7f:  04-02 01:13:39.759 18237 18237 E AndroidRuntime: 	at
junit.framework.Assert.assertEquals(Assert.java:205)
fdb7f:  04-02 01:13:39.759 18237 18237 E AndroidRuntime: 	at
org.chromium.android_webview.test.VisualStateTest$12$2.onComplete(VisualStateTest.java:445)
fdb7f:  04-02 01:13:39.759 18237 18237 E AndroidRuntime: 	at
org.chromium.android_webview.AwContents$7.run(AwContents.java:2427)
fdb7f:  04-02 01:13:39.759 18237 18237 E AndroidRuntime: 	at
android.os.Handler.handleCallback(Handler.java:733)
fdb7f:  04-02 01:13:39.759 18237 18237 E AndroidRuntime: 	at
android.os.Handler.dispatchMessage(Handler.java:95)
fdb7f:  04-02 01:13:39.759 18237 18237 E AndroidRuntime: 	at
android.os.Looper.loop(Looper.java:136)
fdb7f:  04-02 01:13:39.759 18237 18237 E AndroidRuntime: 	at
android.app.ActivityThread.main(ActivityThread.java:5001)
fdb7f:  04-02 01:13:39.759 18237 18237 E AndroidRuntime: 	at
java.lang.reflect.Method.invokeNative(Native Method)
fdb7f:  04-02 01:13:39.759 18237 18237 E AndroidRuntime: 	at
java.lang.reflect.Method.invoke(Method.java:515)
fdb7f:  04-02 01:13:39.759 18237 18237 E AndroidRuntime: 	at
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
fdb7f:  04-02 01:13:39.759 18237 18237 E AndroidRuntime: 	at
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
fdb7f:  04-02 01:13:39.759 18237 18237 E AndroidRuntime: 	at
dalvik.system.NativeStart.main(Native Method)
fdb7f:  04-02 01:13:39.759   777  1019 W ActivityManager: Error in app
org.chromium.android_webview.shell running instrumentation
ComponentInfo{org.chromium.android_webview.test/android.test.InstrumentationTestRunner}:
fdb7f:  04-02 01:13:39.759   777  1019 W ActivityManager:  
junit.framework.AssertionFailedError
fdb7f:  04-02 01:13:39.759   777  1019 W ActivityManager:  
junit.framework.AssertionFailedError: expected:<-65536> but was:<-16776961>

[commit-bot: I haz the power, 2015-04-03 20:22:05]

Patchset 1 (id:??) landed as
https://crrev.com/894faa608876e34f9b20ed101ab7aca69de10d15
Cr-Commit-Position: refs/heads/master@{#323415}