otautil: Move RangeSet implementation into rangeset.cpp.
Since it has grown much larger, users of the header shouldn't compile
and carry their full copies.
Also add missing header includes in imgdiff.cpp and imgdiff_test.cpp.
Test: mmma bootable/recovery
Test: recovery_unit_test; recovery_component_test; recovery_host_test
Change-Id: I88ca54171765e5606ab0d61580fbc1ada578fd7d
diff --git a/tests/component/imgdiff_test.cpp b/tests/component/imgdiff_test.cpp
index 161d58d..bf591da 100644
--- a/tests/component/imgdiff_test.cpp
+++ b/tests/component/imgdiff_test.cpp
@@ -24,6 +24,7 @@
#include <android-base/file.h>
#include <android-base/memory.h>
#include <android-base/stringprintf.h>
+#include <android-base/strings.h>
#include <android-base/test_utils.h>
#include <applypatch/imgdiff.h>
#include <applypatch/imgdiff_image.h>