Cherry pick PR #3172: Import libwebm from Chromium 114 (#3307)

Refer to the original PR: #3172

This includes commits to add new subtrees `third_party/libwebm` and
`third_party/libwebm/source`, and another commit using the library to
remove a Cobalt customization in `//media`.

Note that these should be merged using the "merge" strategy rather than
"squash", to preserve the commit history.

b/327449946
b/338100595

media/BUILD.gn

@@ -13,7 +13,10 @@
 # limitations under the License.
 
 config("media_config") {
-  include_dirs = [ "//third_party/abseil-cpp" ]
+  include_dirs = [
+    "//third_party/abseil-cpp",
+    "//third_party/libwebm/source",
+  ]
   if (is_win) {
     cflags = [
       "/wd4267",  # Conversion from 'size_t' to 'type', possible loss of data.
@@ -37,15 +40,17 @@ config("media_config_public") {
   # TODO: Make include_dirs other than the first one private.
   include_dirs = [
     "//third_party/abseil-cpp",
+    "//third_party/libwebm/source",
+    "//third_party/skia",
     "..",
     "cobalt",
-    "//third_party/skia",
   ]
 }
 
 config("external_config") {
   include_dirs = [
     "//third_party/abseil-cpp",
+    "//third_party/libwebm/source",
     "..",
     "cobalt",
     "../../skia",
@@ -263,4 +268,4 @@ target(gtest_target_type, "chromium_media_test") {
     "//testing/gmock",
     "//testing/gtest",
   ]
-}
+}

media/formats/webm/webm_colour_parser.cc

@@ -7,27 +7,7 @@
 #include "base/check.h"
 #include "base/logging.h"
 #include "media/formats/webm/webm_constants.h"
-
-#if defined(STARBOARD)
-
-// Taken from mkvmuxer.h as is to avoid introducing the whole libwebm library.
-namespace mkvmuxer {
-
-class Colour {
- public:
-  enum Range {
-    kUnspecifiedCr = 0,
-    kBroadcastRange = 1,
-    kFullRange = 2,
-    kMcTcDefined = 3,  // Defined by MatrixCoefficients/TransferCharacteristics.
-  };
-};
-
-}  // namespace mkvmuxer
-
-#else // defined(STARBOARD)
 #include "third_party/libwebm/source/mkvmuxer/mkvmuxer.h"
-#endif // defined(STARBOARD)
 
 namespace media {
 

third_party/libwebm/BUILD.gn

@@ -0,0 +1,18 @@
+# Copyright 2015 The Chromium Authors
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+config("libwebm_config") {
+  include_dirs = [ "./source" ]
+}
+
+static_library("libwebm") {
+  configs += [ ":libwebm_config" ]
+  public_configs = [ ":libwebm_config" ]
+
+  sources = [
+    "source/mkvmuxer/mkvmuxer.cc",
+    "source/mkvmuxer/mkvmuxerutil.cc",
+    "source/mkvmuxer/mkvwriter.cc",
+  ]
+}

third_party/libwebm/DIR_METADATA

@@ -0,0 +1,3 @@
+monorail: {
+  component: "Blink>MediaRecording"
+}

third_party/libwebm/METADATA

@@ -0,0 +1,19 @@
+name: "third_party/libwebm"
+description:
+  "Subtree at third_party/libwebm."
+
+third_party {
+  identifier {
+    type: "ChromiumVersion"
+    value: "114.0.5735.358"  # from https://chromereleases.googleblog.com/2024/03/long-term-support-channel-update-for_26.html
+  }
+  identifier {
+    type: "Git"
+    value: "https://chromium.googlesource.com/chromium/src.git"
+    version: "1759c6ae9316996b9f150c0ce9d0ca78a3d15c02"
+  }
+  identifier {
+    type: "UpstreamSubdir"
+    value: "third_party/libwebm"
+  }
+}

third_party/libwebm/OWNERS

@@ -0,0 +1,9 @@
+# The following OWNERS refer to libwebm Chromium integration.
+[email protected]
+
+# The following OWNER refer to libwebm content.
+[email protected]
+
+# Original (legacy) owner.
+[email protected]
+[email protected]

third_party/libwebm/README.chromium

@@ -0,0 +1,14 @@
+Name: WebM container parser and writer.
+Short Name: libwebm
+URL: https://chromium.googlesource.com/webm/libwebm
+Version: 1.0.0.28
+Revision: e4fbea0c9751ae8aa86629b197a28d8276a2b0da
+CPEPrefix: cpe:/a:webmproject:libwebm:1.0.0.28
+License: BSD
+License File: source/LICENSE.TXT
+Security Critical: yes
+
+Description:
+libwebm is a library to read and write WebM files. It's used by MediaStream
+Recording API to multiplex encoded audio and video into a WebM container. Only
+the writing parts are used for this purpose, the rest is not compiled.

third_party/libwebm/source/.clang-format

@@ -0,0 +1,152 @@
+---
+Language:        Cpp
+# BasedOnStyle:  Google
+# Generated with clang-format 7.0.1
+AccessModifierOffset: -1
+AlignAfterOpenBracket: Align
+AlignConsecutiveAssignments: false
+AlignConsecutiveDeclarations: false
+AlignEscapedNewlinesLeft: true
+AlignOperands:   true
+AlignTrailingComments: false
+AllowAllParametersOfDeclarationOnNextLine: true
+AllowShortBlocksOnASingleLine: false
+AllowShortCaseLabelsOnASingleLine: false
+AllowShortFunctionsOnASingleLine: All
+AllowShortIfStatementsOnASingleLine: false
+AllowShortLoopsOnASingleLine: false
+AlwaysBreakAfterDefinitionReturnType: None
+AlwaysBreakAfterReturnType: None
+AlwaysBreakBeforeMultilineStrings: true
+AlwaysBreakTemplateDeclarations: true
+BinPackArguments: true
+BinPackParameters: true
+BraceWrapping:
+  AfterClass:      false
+  AfterControlStatement: false
+  AfterEnum:       false
+  AfterFunction:   false
+  AfterNamespace:  false
+  AfterObjCDeclaration: false
+  AfterStruct:     false
+  AfterUnion:      false
+  AfterExternBlock: false
+  BeforeCatch:     false
+  BeforeElse:      false
+  IndentBraces:    false
+  SplitEmptyFunction: true
+  SplitEmptyRecord: true
+  SplitEmptyNamespace: true
+BreakBeforeBinaryOperators: None
+BreakBeforeBraces: Attach
+BreakBeforeTernaryOperators: false
+BreakBeforeInheritanceComma: false
+BreakInheritanceList: BeforeColon
+BreakBeforeTernaryOperators: true
+BreakConstructorInitializersBeforeComma: false
+BreakConstructorInitializers: BeforeColon
+BreakAfterJavaFieldAnnotations: false
+BreakStringLiterals: true
+ColumnLimit:     80
+CommentPragmas:  '^ IWYU pragma:'
+CompactNamespaces: false
+ConstructorInitializerAllOnOneLineOrOnePerLine: true
+ConstructorInitializerIndentWidth: 4
+ContinuationIndentWidth: 4
+Cpp11BracedListStyle: true
+DerivePointerAlignment: true
+DisableFormat:   false
+ExperimentalAutoDetectBinPacking: false
+ForEachMacros:   [ foreach, Q_FOREACH, BOOST_FOREACH ]
+IncludeCategories:
+FixNamespaceComments: true
+ForEachMacros:
+  - foreach
+  - Q_FOREACH
+  - BOOST_FOREACH
+IncludeBlocks:   Preserve
+IncludeCategories:
+   - Regex:           '^<ext/.*\.h>'
+     Priority:        2
+   - Regex:           '^<.*\.h>'
+     Priority:        1
+   - Regex:           '^<.*'
+     Priority:        2
+   - Regex:           '.*'
+     Priority:        3
+IncludeIsMainRegex: '([-_](test|unittest))?$'
+IndentCaseLabels: true
+IndentPPDirectives: None
+IndentWidth:     2
+IndentWrappedFunctionNames: false
+JavaScriptQuotes: Leave
+JavaScriptWrapImports: true
+KeepEmptyLinesAtTheStartOfBlocks: false
+MacroBlockBegin: ''
+MacroBlockEnd:   ''
+MaxEmptyLinesToKeep: 1
+NamespaceIndentation: None
+ObjCBinPackProtocolList: Never
+ObjCBlockIndentWidth: 2
+ObjCSpaceAfterProperty: false
+ObjCSpaceBeforeProtocolList: false
+ObjCSpaceBeforeProtocolList: true
+PenaltyBreakAssignment: 2
+PenaltyBreakBeforeFirstCallParameter: 1
+PenaltyBreakComment: 300
+PenaltyBreakFirstLessLess: 120
+PenaltyBreakString: 1000
+PenaltyBreakTemplateDeclaration: 10
+PenaltyExcessCharacter: 1000000
+PenaltyReturnTypeOnItsOwnLine: 200
+PointerAlignment: Left
+RawStringFormats:
+  - Language:        Cpp
+    Delimiters:
+      - cc
+      - CC
+      - cpp
+      - Cpp
+      - CPP
+      - 'c++'
+      - 'C++'
+    CanonicalDelimiter: ''
+    BasedOnStyle:    google
+  - Language:        TextProto
+    Delimiters:
+      - pb
+      - PB
+      - proto
+      - PROTO
+    EnclosingFunctions:
+      - EqualsProto
+      - EquivToProto
+      - PARSE_PARTIAL_TEXT_PROTO
+      - PARSE_TEST_PROTO
+      - PARSE_TEXT_PROTO
+      - ParseTextOrDie
+      - ParseTextProtoOrDie
+    CanonicalDelimiter: ''
+    BasedOnStyle:    google
+ReflowComments:  true
+SortIncludes:    true
+SortUsingDeclarations: true
+SpaceAfterCStyleCast: false
+SpaceAfterTemplateKeyword: true
+SpaceBeforeAssignmentOperators: true
+SpaceBeforeCpp11BracedList: false
+SpaceBeforeCtorInitializerColon: true
+SpaceBeforeInheritanceColon: true
+SpaceBeforeParens: ControlStatements
+SpaceBeforeRangeBasedForLoopColon: true
+SpaceInEmptyParentheses: false
+SpacesBeforeTrailingComments: 2
+SpacesInAngles:  false
+SpacesInContainerLiterals: true
+SpacesInCStyleCastParentheses: false
+SpacesInParentheses: false
+SpacesInSquareBrackets: false
+Standard:        Auto
+TabWidth:        8
+UseTab:          Never
+...

third_party/libwebm/source/.gitattributes

@@ -0,0 +1,6 @@
+*.sln           eol=crlf
+*.vcproj        eol=crlf
+*.vsprops       eol=crlf
+*.vcxproj       eol=crlf
+*.mkv           -text -diff
+*.webm          -text -diff

third_party/libwebm/source/.gitignore

@@ -0,0 +1,35 @@
+*.mkv
+*.MKV
+core
+*.a
+*.d
+*.so*
+*.o
+*~
+*.swp
+*.ncb
+*.user
+*.suo
+*.exe
+/*.webm
+Debug
+Release
+*.sdf
+*.opensdf
+ipch
+dumpvtt
+mkvmuxer_sample
+mkvparser_sample
+vttdemux
+mkvmuxer_tests
+mkvparser_tests
+webm_info
+webm2pes
+webm2pes_tests
+webm2ts
+vp9_header_parser_tests
+vp9_level_stats_tests
+Makefile
+CMakeFiles
+CMakeCache.txt
+*.cmake

third_party/libwebm/source/AUTHORS.TXT

@@ -0,0 +1,4 @@
+# Names should be added to this file like so:
+# Name or Organization <email address>
+
+Google Inc.

third_party/libwebm/source/Android.mk

@@ -0,0 +1,17 @@
+LOCAL_PATH:= $(call my-dir)
+
+include $(CLEAR_VARS)
+LOCAL_MODULE:= libwebm
+LOCAL_CPPFLAGS:=-D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS
+LOCAL_CPPFLAGS+=-D__STDC_LIMIT_MACROS -std=c++11
+LOCAL_C_INCLUDES:= $(LOCAL_PATH)
+LOCAL_EXPORT_C_INCLUDES:= $(LOCAL_PATH)
+
+LOCAL_SRC_FILES:= common/file_util.cc \
+                  common/hdr_util.cc \
+                  mkvparser/mkvparser.cc \
+                  mkvparser/mkvreader.cc \
+                  mkvmuxer/mkvmuxer.cc \
+                  mkvmuxer/mkvmuxerutil.cc \
+                  mkvmuxer/mkvwriter.cc
+include $(BUILD_STATIC_LIBRARY)