Revert of Make some functions that are hit during renderer startup available for inlining (patchset #3 id:40001 of https://codereview.chromium.org/2950993002/ )

Reason for revert:
Blocks roll:
https://codereview.chromium.org/2954833002/

E.g.:
https://build.chromium.org/p/tryserver.chromium.mac/builders/mac_chromium_compile_dbg_ng/builds/449680
https://build.chromium.org/p/tryserver.chromium.linux/builders/linux_chromium_compile_dbg_ng/builds/324953

Please include those chromium trybots on reland. Maybe missing symbol export?

Original issue's description:
> Make some functions that are hit during renderer startup available for inlining
>
> This is towards closing the perf gap between the MSVC build (which uses link-
> time optimization) and Clang (where LTO isn't ready on Windows yet). We did
> a study (see bug) to see which non-inlined functions are hit a lot during render
> start-up, and which would be inlined during LTO. This should benefit performance
> in all builds which currently don't use LTO (Android, Linux, Mac) as well as
> the Win/Clang build.
>
> The binary size of chrome_child.dll increases by 2KB with this.
>
> BUG=chromium:728324
>
> Review-Url: https://codereview.chromium.org/2950993002
> Cr-Commit-Position: refs/heads/master@{#46191}
> Committed: https://chromium.googlesource.com/v8/v8/+/d00d52be1fce9c1bf5558c8b26bf984efd09e65b

TBR=jochen@chromium.org,mstarzinger@chromium.org,rmcilroy@chromium.org,vogelheim@chromium.org,marja@chromium.org,mlippautz@chromium.org,thakis@chromium.org,hans@chromium.org
# Not skipping CQ checks because original CL landed more than 1 days ago.
BUG=chromium:728324
NOTRY=true
NOPRESUBMIT=true

Review-Url: https://codereview.chromium.org/2955793002
Cr-Commit-Position: refs/heads/master@{#46195}