Fix synchronization for old versions of WebRTC.

sync.bat

@@ -5,30 +5,48 @@ REM see https://chromiumdash.appspot.com/branches
 REM and https://chromiumdash.appspot.com/schedule
 set WEBRTC_REVISION=4280
 
+set DEPOT_TOOLS_COMPATIBLE_REVISION=a964ca1296b
+
 if not "%1"=="" set WEBRTC_REVISION="%1"
 
 set REPO_ROOT=%~dp0
-set PATH=%REPO_ROOT%depot_tools;%PATH%
-set DEPOT_TOOLS_WIN_TOOLCHAIN=0
 
-cd %REPO_ROOT%
+cd "%REPO_ROOT%"
 if not exist "depot_tools" (
     echo Cloning Depot Tools...
     git.exe clone https://chromium.googlesource.com/chromium/tools/depot_tools.git
+    cd "%REPO_ROOT%\depot_tools"
+    python.exe update_depot_tools_toggle.py --disable
 )
 
-echo Updating Depot Tools...
+set PATH=%REPO_ROOT%depot_tools;%PATH%
-cd %REPO_ROOT%\depot_tools
+set DEPOT_TOOLS_WIN_TOOLCHAIN=0
-call update_depot_tools.bat
+
+if not exist "%REPO_ROOT%\webrtc" (
+	echo "Updating Depot Tools to the latest revision..."
+	cd "%REPO_ROOT%\depot_tools"
+	git.exe checkout -q -f main
+    git.exe pull
 
-cd %REPO_ROOT%
-if not exist "webrtc" (
     echo Cloning WebRTC...
-    mkdir webrtc
+    mkdir "%REPO_ROOT%\webrtc"
-    cd webrtc
+    cd "%REPO_ROOT%\webrtc"
-    fetch --nohooks --no-history webrtc
+    fetch --nohooks webrtc
+    cd "%REPO_ROOT%\webrtc\src"
+    call gclient sync --nohooks --with_branch_heads
 )
 
+REM Latest Depot Tools versions are not compatible
+REM with old WebRTC versions, so we peek revision
+REM from around the same time as the WebRTC and
+REM forbid gclient to auto-update Depot Tools.
+cd "%REPO_ROOT%\webrtc\src"
+FOR /F "tokens=*" %%g IN ("git.exe log -n 1 --pretty=format:%ci \"branch-heads/%WEBRTC_REVISION%\"") do (SET LAST_WEBRTC_COMMIT_DATE=%%g)
+cd "%REPO_ROOT%\depot_tools"
+FOR /F "tokens=*" %%g IN ("git rev-list -n 1 --before=\"%LAST_WEBRTC_COMMIT_DATE%\" main") do (SET DEPOT_TOOLS_COMPATIBLE_REVISION=%%g)
+echo "Updating Depot Tools to a compatible revision %DEPOT_TOOLS_COMPATIBLE_REVISION%..."
+git.exe checkout -q -f %DEPOT_TOOLS_COMPATIBLE_REVISION%
+
 echo Updating WebRTC to version %WEBRTC_REVISION%...
 cd %REPO_ROOT%\webrtc\src
 call gclient sync --with_branch_heads --reset
@@ -37,3 +55,8 @@ git.exe checkout -f -B %WEBRTC_REVISION% branch-heads/%WEBRTC_REVISION%
 call gclient sync --force -D --reset
 
 cd %REPO_ROOT%
+
+
+echo Updating Depot Tools...
+cd %REPO_ROOT%\depot_tools
+call update_depot_tools.bat

sync.sh

@@ -4,38 +4,56 @@ set -e
 # To determine last stable WebRTC revision,
 # see https://chromiumdash.appspot.com/branches
 # and https://chromiumdash.appspot.com/schedule
-WEBRTC_REVISION=4280
+WEBRTC_REVISION=4692
 
 if [ $# -eq 1 ]; then
     WEBRTC_REVISION=$1
 fi
 
 REPO_ROOT=$(dirname $(readlink -f $0))
-export PATH=${REPO_ROOT}/depot_tools:$PATH
 
 cd ${REPO_ROOT}
 if [ ! -d depot_tools ];
 then
     echo "Cloning Depot Tools..."
     git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git
+    cd ${REPO_ROOT}/depot_tools
+    python update_depot_tools_toggle.py --disable
+else
+    echo "Updating Depot Tools to the latest revision..."
+    cd ${REPO_ROOT}/depot_tools
+    git checkout -q -f main
+    git pull
 fi
 
-echo "Updating Depot Tools..."
+export PATH=${REPO_ROOT}/depot_tools:$PATH
-cd ${REPO_ROOT}/depot_tools
-./update_depot_tools
 
-cd ${REPO_ROOT}
+if [ ! -d ${REPO_ROOT}/webrtc ];
-if [ ! -d webrtc ];
 then
     echo "Cloning WebRTC..."
-    mkdir webrtc
+    mkdir ${REPO_ROOT}/webrtc
-    cd webrtc
+    cd ${REPO_ROOT}/webrtc
-    fetch --nohooks --no-history webrtc
+    fetch --nohooks webrtc
+    cd ${REPO_ROOT}/webrtc/src
+    gclient sync --nohooks --with_branch_heads
+else
+    echo "Updating WebRTC branches info..."
+    gclient sync --nohooks --with_branch_heads
 fi
 
+# Latest Depot Tools versions are not compatible
+# with old WebRTC versions, so we peek revision
+# from around the same time as the WebRTC and
+# forbid gclient to auto-update Depot Tools.
+cd ${REPO_ROOT}/webrtc/src
+LAST_WEBRTC_COMMIT_DATE=$(git log -n 1 --pretty=format:%ci "branch-heads/${WEBRTC_REVISION}")
+cd ${REPO_ROOT}/depot_tools
+DEPOT_TOOLS_COMPATIBLE_REVISION=$(git rev-list -n 1 --before="$LAST_WEBRTC_COMMIT_DATE" main)
+echo "Updating Depot Tools to a compatible revision ${DEPOT_TOOLS_COMPATIBLE_REVISION}..."
+git checkout -q -f ${DEPOT_TOOLS_COMPATIBLE_REVISION}
+
 echo "Updating WebRTC to version ${WEBRTC_REVISION}..."
 cd ${REPO_ROOT}/webrtc/src
-gclient sync --with_branch_heads --reset
+git clean -ffd
-git fetch
+git checkout -B ${WEBRTC_REVISION} branch-heads/${WEBRTC_REVISION}
-git checkout -f -B ${WEBRTC_REVISION} branch-heads/${WEBRTC_REVISION}
 gclient sync --force -D --reset