Add android_ninja, like android_make for ninja.

platform_tools/android/bin/android_ninja

Index: platform_tools/android/bin/android_ninja
diff --git a/platform_tools/android/bin/android_ninja b/platform_tools/android/bin/android_ninja
new file mode 100755
index 0000000000000000000000000000000000000000..1af7ae1ac865ce500ceb477554936a83db0e60c1
--- /dev/null
+++ b/platform_tools/android/bin/android_ninja
@@ -0,0 +1,14 @@
+#!/bin/bash
+set -e
+
+rm -f .android_config   # If no -d flag is given, force the default device (not the last one).

[scroggo, 2013/09/26 21:23:25]

Should all android building behave this way?

[mtklein, 2013/09/26 21:39:55]

Yep, this is only here because android_make does the same thing.

+source android_setup.sh
+echo $DEVICE_ID > .android_config
+
+exportVar GYP_GENERATORS ninja

[scroggo, 2013/09/26 21:23:25]

Does this change my gyp generators for building non android?

[mtklein, 2013/09/26 21:39:55]

Nope.  In fact, android_make does the same thing setting it to make-android. 
I've refactored that a bit to make this clearer.

+./gyp_skia
+
+OUT=$SKIA_OUT/${BUILDTYPE-Debug}
+ninja -C $OUT $APP_ARGS
+cd $OUT; ln -sf lib lib.target; cd - # android_run_skia looks in lib.target.
+