Revert of more zero-length changes for svg compatibility

Revert of more zero-length changes for svg compatibility (patchset #6 id:100001 of https://codereview.chromium.org/1330623003/ )

Reason for revert:
breaks DEPS

Original issue's description:
> more zero-length changes for svg compatibility
> 
> If a path contains a moveTo followed by a line or curve,
> even if the line or curve has no length, SVG expects
> the end caps to draw if the cap style is round or square.
> 
> Fredrik Söderquist attached a patch to the chrome bug
> (slightly modified here) that fixes layout test failures
> resulting from deleting special-case code in SVG
> dealing with zero-length path segments.
> 
> R=reed@google.com,fs@opera.com
> BUG=22974
> 
> Committed: https://skia.googlesource.com/skia/+/62fb1ba1786863e545c89839b5706ad5151cec15

TBR=fs@opera.com,reed@google.com
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=22974
Committed: https://skia.googlesource.com/skia/+/5ca4fa3846067a47e88d35ace895df3ebe3ec2a5

[caryclark, 2015-09-09 16:34:06]

Created Revert of more zero-length changes for svg compatibility

[commit-bot: I haz the power, 2015-09-09 16:34:18]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1334543002/1
View timeline at
 https://chromium-cq-status.appspot.com/patch-timeline/1334543002/1

[commit-bot: I haz the power, 2015-09-09 16:34:25]

Committed patchset #1 (id:1) as
https://skia.googlesource.com/skia/+/5ca4fa3846067a47e88d35ace895df3ebe3ec2a5

[caryclark, 2015-09-09 20:20:33]

A revert of this CL (patchset #1 id:1) has been created in
https://codereview.chromium.org/1314833004/ by caryclark@google.com.

The reason for reverting is: DEPS should be fixed now.