Revert "Roll src/third_party/dav1d/libdav1d/ 940eee483..115fe773f (26…

… commits)"

This reverts commit eba0ee5.

Reason for revert: Test failures on Linux CFI related to Dav1d tests. More details at crbug.com/1040107

Original change's description:
> Roll src/third_party/dav1d/libdav1d/ 940eee483..115fe773f (26 commits)
> 
> https://chromium.googlesource.com/external/github.com/videolan/dav1d.git/+log/940eee483a85..115fe773fe0e
> 
> $ git log 940eee483..115fe773f --date=short --no-merges --format='%ad %ae %s'
> 2020-01-07 dalecurtis Fix missing include for limits.h
> 2020-01-05 martin arm64: msac: Avoid 32 bit intermediates in symbol_adapt
> 2020-01-02 martin arm64: itx: Use sqrdmulh in the preexisting identity transform functions
> 2020-01-01 martin arm64: itx: Specialcase transforms with identity in the first pass with downshift
> 2020-01-02 martin arm64: itx: Adjust .irp in the 4x16/16x4/8x16/16x8 functions
> 2019-12-31 rsbultje Don't interleave the skip mode index finding loops
> 2020-01-01 rsbultje Prevent shift by >= 32
> 2019-12-31 rsbultje Take lossless into account when assigning loopfilter strength
> 2019-12-31 rsbultje Deal with chroma coefficients that are exactly 0x100000
> 2019-12-31 gramner x86: Fix inverse (flip)adst 8x4 clipping
> 2019-12-31 gramner Fix C inverse ADST clipping
> 2019-12-28 rsbultje av1: use chroma txtp inference over default DCT_DCT if qidx=0
> 2019-12-28 rsbultje av1: skip super-resolution upscaling if width < 16
> 2019-12-28 rsbultje av1: do C inverse transforms in int32_t precision
> 2019-12-28 mjbshaw Allow skip mode
> 2019-12-28 mjbshaw Disable warping on scaled references
> 2019-12-23 rsbultje Check skip flag before setting tx context to TX_4X4 in lossless frames
> 2019-12-18 martin Don't assume dlsym exists on linux
> 2019-12-12 gramner Linux: Add a workaround for a glibc stack size issue
> 2019-12-14 gramner x86: Disable AVX-512 by default
> 2019-12-14 gramner Fix potential race condition in dav1d_get_cpu_flags()
> 2019-12-14 gramner x86: Remove unused cpu flags
> 2019-12-14 e.m.terhoeven Add support for Ice Lake AVX-512 cpu flags
> 2019-12-13 rzumer Correct the edge buffer documentation
> 2019-12-05 ltrudeau Move lvl variable in cdef_brow to outer loop
> 2019-11-03 rsbultje Simplify shifting in generate_grain_y/uv AVX2
> 
> Created with:
>   roll-dep src/third_party/dav1d/libdav1d
> 
> Change-Id: I19174ac159addacbe3b63016ce46a30425abd4f3
> Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1989729
> Commit-Queue: Dale Curtis <dalecurtis@chromium.org>
> Reviewed-by: Thomas Guilbert <tguilbert@chromium.org>
> Cr-Commit-Position: refs/heads/master@{#729186}

TBR=dalecurtis@chromium.org,tguilbert@chromium.org

Change-Id: I815a01f90db85775d1695de8c4feb3bdb059b4b0
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1992212
Reviewed-by: sebsg <sebsg@chromium.org>
Commit-Queue: sebsg <sebsg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#729470}

DEPS

@@ -775,7 +775,7 @@ deps = {
     Var('chromium_git') + '/angle/angle.git' + '@' +  Var('angle_revision'),
 
   'src/third_party/dav1d/libdav1d':
-    Var('chromium_git') + '/external/github.com/videolan/dav1d.git' + '@' + '115fe773fe0e266a0918fbb950e1acfa5ee2b0bd',
+    Var('chromium_git') + '/external/github.com/videolan/dav1d.git' + '@' + '940eee483a852ec54349ef36f19713bb2b895b57',
 
   'src/third_party/dawn':
     Var('dawn_git') + '/dawn.git' + '@' +  Var('dawn_revision'),

third_party/dav1d/config/linux-noasm/x64/config.h

@@ -29,8 +29,6 @@
 
 #define HAVE_CLOCK_GETTIME 1
 
-#define HAVE_DLSYM 1
-
 #define HAVE_POSIX_MEMALIGN 1
 
 #define HAVE_UNISTD_H 1

third_party/dav1d/config/linux/arm/config.h

@@ -31,8 +31,6 @@
 
 #define HAVE_CLOCK_GETTIME 1
 
-#define HAVE_DLSYM 1
-
 #define HAVE_GETAUXVAL 1
 
 #define HAVE_POSIX_MEMALIGN 1

third_party/dav1d/config/linux/arm64/config.h

@@ -31,8 +31,6 @@
 
 #define HAVE_CLOCK_GETTIME 1
 
-#define HAVE_DLSYM 1
-
 #define HAVE_GETAUXVAL 1
 
 #define HAVE_POSIX_MEMALIGN 1

third_party/dav1d/config/linux/x64/config.h

@@ -29,8 +29,6 @@
 
 #define HAVE_CLOCK_GETTIME 1
 
-#define HAVE_DLSYM 1
-
 #define HAVE_POSIX_MEMALIGN 1
 
 #define HAVE_UNISTD_H 1

third_party/dav1d/config/linux/x86/config.h

@@ -29,8 +29,6 @@
 
 #define HAVE_CLOCK_GETTIME 1
 
-#define HAVE_DLSYM 1
-
 #define HAVE_POSIX_MEMALIGN 1
 
 #define HAVE_UNISTD_H 1

third_party/dav1d/dav1d_generated.gni

@@ -1,4 +1,4 @@
-# Copyright 2020 The Chromium Authors. All rights reserved.
+# Copyright 2019 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
@@ -102,8 +102,6 @@ c_sources = [
   "libdav1d/src/ipred.h",
   "libdav1d/src/ipred_prepare.h",
   "libdav1d/src/itx.h",
-  "libdav1d/src/itx_1d.c",
-  "libdav1d/src/itx_1d.h",
   "libdav1d/src/levels.h",
   "libdav1d/src/lf_apply.h",
   "libdav1d/src/lf_mask.c",

third_party/dav1d/generate_source.py

@@ -26,6 +26,9 @@
     "libdav1d/src/thread_task.h",
 ]
 
+# .c files which are included by other .c files and shouldn't be listed.
+DAV1D_C_FILE_INCLUDES = ["libdav1d/src/itx_1d.c"]
+
 
 def WriteArray(fd, var_name, array, filter_list=[], last_entry=False):
   if len(array) == 0:
@@ -56,8 +59,9 @@ def WriteGn(fd):
 
   # Generate list of sources which need to be compiled multiple times with the
   # correct -DBIT_DEPTH=8|10 option specified each time.
-  WriteArray(fd, "c_sources", glob.glob("libdav1d/src/*.[c|h]"),
-             DAV1D_ENTRY_POINT_SOURCES + template_sources)
+  WriteArray(
+      fd, "c_sources", glob.glob("libdav1d/src/*.[c|h]"),
+      DAV1D_ENTRY_POINT_SOURCES + DAV1D_C_FILE_INCLUDES + template_sources)
 
   WriteArray(
       fd, "entry_point_sources", DAV1D_ENTRY_POINT_SOURCES, last_entry=True)