Revert of Use CTFontCreateForString for RenderTextHarfbuzz on Mac

Revert of Use CTFontCreateForString for RenderTextHarfbuzz on Mac (patchset #5 id:80001 of https://codereview.chromium.org/2927953003/ )

Reason for revert:
Causes views_unittest LabelSelectionTest.MouseDragSingleLineRTL to fail on 10.10 and 10.11

Original issue's description:
> Use CTFontCreateForString for RenderTextHarfbuzz on Mac
> 
> The approach ends up pretty close to what's already done for Windows.
> 
> On Mac, CTFontCreateForString() gives better fallbacks (i.e. they more
> often match what native UI does) and requires RenderTextHarfbuzz to do
> less work. However, it doesn't guarantee that the returned font can
> display every glyph in the provided string.
> 
> So still use CTFontCopyDefaultCascadeListForLanguages (which is now a
> public API - hooray) to provide a last-resort list of fallback fonts.
> 
> BUG=696867, 619684
> 
> Review-Url: https://codereview.chromium.org/2927953003
> Cr-Commit-Position: refs/heads/master@{#481062}
> Committed: https://chromium.googlesource.com/chromium/src/+/62cbc10d4dbfeed614eb23c3d996793814a35334

TBR=asvitkine@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=696867, 619684
Review-Url: https://codereview.chromium.org/2950013002
Cr-Commit-Position: refs/heads/master@{#481095}
Committed: https://chromium.googlesource.com/chromium/src/+/dca011e454153e08602ead192cda84abc2946a64

[tapted, 2017-06-21 02:57:35]

The CQ bit was checked by tapted@chromium.org

[tapted, 2017-06-21 02:57:36]

Created Revert of Use CTFontCreateForString for RenderTextHarfbuzz on Mac

[commit-bot: I haz the power, 2017-06-21 02:57:47]

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, 2017-06-21 02:58:09]

CQ is committing da patch.

Bot data: {"patchset_id": 1, "attempt_start_ts": 1498013855525450, "parent_rev":
"da5f02d5361c2b74bec668ee8e6adcfb42b23a21", "commit_rev":
"dca011e454153e08602ead192cda84abc2946a64"}

[commit-bot: I haz the power, 2017-06-21 02:58:20]

Description was changed from

==========
Revert of Use CTFontCreateForString for RenderTextHarfbuzz on Mac (patchset #5
id:80001 of https://codereview.chromium.org/2927953003/ )

Reason for revert:
Causes views_unittest LabelSelectionTest.MouseDragSingleLineRTL to fail on 10.10
and 10.11

Original issue's description:
> Use CTFontCreateForString for RenderTextHarfbuzz on Mac
> 
> The approach ends up pretty close to what's already done for Windows.
> 
> On Mac, CTFontCreateForString() gives better fallbacks (i.e. they more
> often match what native UI does) and requires RenderTextHarfbuzz to do
> less work. However, it doesn't guarantee that the returned font can
> display every glyph in the provided string.
> 
> So still use CTFontCopyDefaultCascadeListForLanguages (which is now a
> public API - hooray) to provide a last-resort list of fallback fonts.
> 
> BUG=696867, 619684
> 
> Review-Url: https://codereview.chromium.org/2927953003
> Cr-Commit-Position: refs/heads/master@{#481062}
> Committed:
https://chromium.googlesource.com/chromium/src/+/62cbc10d4dbfeed614eb23c3d996...

TBR=asvitkine@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=696867, 619684
==========

to

==========
Revert of Use CTFontCreateForString for RenderTextHarfbuzz on Mac (patchset #5
id:80001 of https://codereview.chromium.org/2927953003/ )

Reason for revert:
Causes views_unittest LabelSelectionTest.MouseDragSingleLineRTL to fail on 10.10
and 10.11

Original issue's description:
> Use CTFontCreateForString for RenderTextHarfbuzz on Mac
> 
> The approach ends up pretty close to what's already done for Windows.
> 
> On Mac, CTFontCreateForString() gives better fallbacks (i.e. they more
> often match what native UI does) and requires RenderTextHarfbuzz to do
> less work. However, it doesn't guarantee that the returned font can
> display every glyph in the provided string.
> 
> So still use CTFontCopyDefaultCascadeListForLanguages (which is now a
> public API - hooray) to provide a last-resort list of fallback fonts.
> 
> BUG=696867, 619684
> 
> Review-Url: https://codereview.chromium.org/2927953003
> Cr-Commit-Position: refs/heads/master@{#481062}
> Committed:
https://chromium.googlesource.com/chromium/src/+/62cbc10d4dbfeed614eb23c3d996...

TBR=asvitkine@chromium.org
# Skipping CQ checks because original CL landed less than 1 days ago.
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=696867, 619684

Review-Url: https://codereview.chromium.org/2950013002
Cr-Commit-Position: refs/heads/master@{#481095}
Committed:
https://chromium.googlesource.com/chromium/src/+/dca011e454153e08602ead192cda...
==========

[commit-bot: I haz the power, 2017-06-21 02:58:21]

Committed patchset #1 (id:1) as
https://chromium.googlesource.com/chromium/src/+/dca011e454153e08602ead192cda...