Added src and exclude_src to debuggable builds

Fixes: 200976245
Test: manually tested
Change-Id: I68b6230f30aa2c15e6a80010cd639ea453b4b29e
Merged-In: I68b6230f30aa2c15e6a80010cd639ea453b4b29e
(cherry picked from commit 85a8afa9e72feff6d804c5d0a0827db63cb55fb9)
diff --git a/android/variable.go b/android/variable.go
index 0dc5262..741d9ae 100644
--- a/android/variable.go
+++ b/android/variable.go
@@ -101,6 +101,8 @@
 				Keep_symbols                 *bool
 				Keep_symbols_and_debug_frame *bool
 			}
+			Srcs         []string
+			Exclude_srcs []string
 		}
 
 		// eng is true for -eng builds, and can be used to turn on additionaly heavyweight debugging