Revert of Remove unneeded split_count assignments

Revert of Remove unneeded split_count assignments (patchset #4 id:60001 of https://codereview.chromium.org/2311493002/ )

Reason for revert:
Due to this landing after my revert of Brett's change, it broke the world, e.g. https://build.chromium.org/p/chromium/builders/Android/builds/61684 . Since I'm not sure if the patch is quite right, I'll revert this too.

Original issue's description:
> Remove unneeded split_count assignments
>
> Refactoring of WebKit gn files has made splitting libraries less
> necessary. This broke generating of build files. This change
> removes the unneeded assignments.
>
> The error, in the generate_build_files step, was:
>
> C:\b\c\b\win_chrome\src\buildtools\win\gn.exe gen //out/Release --check
>   -> returned 1
> ERROR at //third_party/WebKit/Source/core/BUILD.gn:52:19: Assignment had no effect.
>     split_count = 5
>                   ^
> You set the variable "split_count" here and it was unused before it went
> out of scope.
> See //third_party/WebKit/public/BUILD.gn:53:5: which caused the file to be included.
>     "//third_party/WebKit/Source/core",
>     ^---------------------------------
> GN gen failed: 1
>
> It first appeared in build 10455:
> https://build.chromium.org/p/chromium.chrome/builders/Google%20Chrome%20Win/builds/10455/steps/generate_build_files/logs/stdio
>
> Suspect is crrev.com/2299143005
>
> TBR=brettw@chromium.org
>
> Committed: https://crrev.com/f7d8febdf0166e2193b5e34e81b6b9dfb9ffd7c4
> Cr-Commit-Position: refs/heads/master@{#416441}

TBR=brettw@chromium.org,brucedawson@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Committed: https://crrev.com/91f1772747088c07ba2ebd2afb8999d72b56bfaf
Cr-Commit-Position: refs/heads/master@{#416443}

[Nico, 2016-09-03 04:09:09]

The CQ bit was checked by thakis@chromium.org

[Nico, 2016-09-03 04:09:09]

Created Revert of Remove unneeded split_count assignments

[commit-bot: I haz the power, 2016-09-03 04:09:17]

CQ is trying da patch. Follow status at
 
https://chromium-cq-status.appspot.com/v2/patch-status/codereview.chromium.or...

[commit-bot: I haz the power, 2016-09-03 04:10:11]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2016-09-03 04:12:24]

Description was changed from

==========
Revert of Remove unneeded split_count assignments (patchset #4 id:60001 of
https://codereview.chromium.org/2311493002/ )

Reason for revert:
Due to this landing after my revert of Brett's change, it broke the world, e.g.
https://build.chromium.org/p/chromium/builders/Android/builds/61684 . Since I'm
not sure if the patch is quite right, I'll revert this too.

Original issue's description:
> Remove unneeded split_count assignments
> 
> Refactoring of WebKit gn files has made splitting libraries less
> necessary. This broke generating of build files. This change
> removes the unneeded assignments.
> 
> The error, in the generate_build_files step, was:
> 
> C:\b\c\b\win_chrome\src\buildtools\win\gn.exe gen //out/Release --check
>   -> returned 1
> ERROR at //third_party/WebKit/Source/core/BUILD.gn:52:19: Assignment had no
effect.
>     split_count = 5
>                   ^
> You set the variable "split_count" here and it was unused before it went
> out of scope.
> See //third_party/WebKit/public/BUILD.gn:53:5: which caused the file to be
included.
>     "//third_party/WebKit/Source/core",
>     ^---------------------------------
> GN gen failed: 1
> 
> It first appeared in build 10455:
>
https://build.chromium.org/p/chromium.chrome/builders/Google%20Chrome%20Win/b...
> 
> Suspect is crrev.com/2299143005
> 
> TBR=brettw@chromium.org
> 
> Committed: https://crrev.com/f7d8febdf0166e2193b5e34e81b6b9dfb9ffd7c4
> Cr-Commit-Position: refs/heads/master@{#416441}

TBR=brettw@chromium.org,brucedawson@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
==========

to

==========
Revert of Remove unneeded split_count assignments (patchset #4 id:60001 of
https://codereview.chromium.org/2311493002/ )

Reason for revert:
Due to this landing after my revert of Brett's change, it broke the world, e.g.
https://build.chromium.org/p/chromium/builders/Android/builds/61684 . Since I'm
not sure if the patch is quite right, I'll revert this too.

Original issue's description:
> Remove unneeded split_count assignments
>
> Refactoring of WebKit gn files has made splitting libraries less
> necessary. This broke generating of build files. This change
> removes the unneeded assignments.
>
> The error, in the generate_build_files step, was:
>
> C:\b\c\b\win_chrome\src\buildtools\win\gn.exe gen //out/Release --check
>   -> returned 1
> ERROR at //third_party/WebKit/Source/core/BUILD.gn:52:19: Assignment had no
effect.
>     split_count = 5
>                   ^
> You set the variable "split_count" here and it was unused before it went
> out of scope.
> See //third_party/WebKit/public/BUILD.gn:53:5: which caused the file to be
included.
>     "//third_party/WebKit/Source/core",
>     ^---------------------------------
> GN gen failed: 1
>
> It first appeared in build 10455:
>
https://build.chromium.org/p/chromium.chrome/builders/Google%20Chrome%20Win/b...
>
> Suspect is crrev.com/2299143005
>
> TBR=brettw@chromium.org
>
> Committed: https://crrev.com/f7d8febdf0166e2193b5e34e81b6b9dfb9ffd7c4
> Cr-Commit-Position: refs/heads/master@{#416441}

TBR=brettw@chromium.org,brucedawson@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true

Committed: https://crrev.com/91f1772747088c07ba2ebd2afb8999d72b56bfaf
Cr-Commit-Position: refs/heads/master@{#416443}
==========

[commit-bot: I haz the power, 2016-09-03 04:12:25]

Patchset 1 (id:??) landed as
https://crrev.com/91f1772747088c07ba2ebd2afb8999d72b56bfaf
Cr-Commit-Position: refs/heads/master@{#416443}