Android now has the new glShaderSource signature

Change-Id: I45836219fc0e97607d83d458de9babb44f4c7534
diff --git a/Android.mk b/Android.mk
index 26ad2bd..a6cfb4a 100644
--- a/Android.mk
+++ b/Android.mk
@@ -62,6 +62,9 @@
 #Skia should not use dlopen on Android.
 LOCAL_CFLAGS += -DSK_CAN_USE_DLOPEN=0
 
+# Android's gl2.h provides the new glShaderSource signature
+LOCAL_CFLAGS += -DGR_USE_NEW_GL_SHADER_SOURCE_SIGNATURE=1
+
 # used for testing
 #LOCAL_CFLAGS += -g -O0