Add MD5 support when syncing debug files and option to just start gdbserver

platform_tools/android/bin/android_gdbserver

 #!/bin/bash
 #
-# android_gdb: Pushes gdbserver. Connects and enters debugging environment.
+# android_gdbserver: Pushes gdbserver. Starts debugging environment.
 
 SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
 APP_NAME=$(basename $1)
 PORT=5039
 
 # Collect extra arguments to be passed to the Skia binary
 shift
 while (( "$#" )); do
   APP_ARGS="$APP_ARGS $1"
   shift
 done
 
 source $SCRIPT_DIR/android_setup.sh
 source $SCRIPT_DIR/utils/setup_adb.sh
 
 # We need the debug symbols from these files
 GDB_TMP_DIR=$(pwd)/android_gdb_tmp
 mkdir $GDB_TMP_DIR
 echo "Copying symbol files"
-$ADB pull /system/bin/skia_launcher $GDB_TMP_DIR
-$ADB pull /system/lib/libc.so $GDB_TMP_DIR
-$ADB pull /data/data/com.skia/lib/libskia_android.so $GDB_TMP_DIR
-$ADB pull /data/data/com.skia/lib/lib$APP_NAME.so $GDB_TMP_DIR
+adb_pull_if_needed /system/bin/skia_launcher $GDB_TMP_DIR
+adb_pull_if_needed /system/lib/libc.so $GDB_TMP_DIR
+adb_pull_if_needed /data/data/com.skia/lib/libskia_android.so $GDB_TMP_DIR
+adb_pull_if_needed /data/data/com.skia/lib/lib$APP_NAME.so $GDB_TMP_DIR
 
 echo "Checking for skia_launcher app..."
 if [ ! -f $GDB_TMP_DIR/skia_launcher ]
 then
     echo "Unable for find the skia_launcher on the device"
     rm -rf $GDB_TMP_DIR
     exit 1;
 fi
 
 echo "Checking for $APP_NAME library..."
@@ skipping 11 matching lines @@
 echo "Setting up port forward"
 $ADB forward "tcp:5039" "tcp:5039"
 
 # Kill all previous instances of gdbserver and skia_launcher to rid all port overriding errors.
 echo "Killing any running Skia processes."
 $ADB shell ps | grep gdbserver | awk '{print $2}' | xargs $ADB shell kill
 $ADB shell ps | grep skia_launcher | awk '{print $2}' | xargs $ADB shell kill
 
 # Starting up gdbserver in android shell
 echo "Starting gdbserver with command: skia_launcher $APP_NAME$APP_ARGS"
-$ADB shell gdbserver :5039 /system/bin/skia_launcher $APP_NAME$APP_ARGS &
-
-# Wait for gdbserver
-sleep 2
-
-# Set up gdb commands
-GDBSETUP=$GDB_TMP_DIR/gdb.setup
-echo "file $GDB_TMP_DIR/skia_launcher" >> $GDBSETUP
-echo "target remote :$PORT" >> $GDBSETUP
-echo "set solib-absolute-prefix $GDB_TMP_DIR" >> $GDBSETUP
-echo "set solib-search-path $GDB_TMP_DIR" >> $GDBSETUP
-
-# The apps shared library symbols are not loaded by default so we load them here
-echo "break skia_launcher.cpp:launch_app" >> $GDBSETUP
-echo "continue" >> $GDBSETUP
-echo "sharedLibrary $APP_NAME" >> $GDBSETUP
-
-
-# Launch gdb client
-echo "Entering gdb client shell"
-$ANDROID_TOOLCHAIN/arm-linux-androideabi-gdb -x $GDBSETUP
-
-# Clean up
-rm -rf $GDB_TMP_DIR
+$ADB shell gdbserver :5039 /system/bin/skia_launcher $APP_NAME$APP_ARGS &