Bug 1063643 - Allow for building Fennec with a limited set of resources. r=nalexander

build/autoconf/android.m4

@@ -413,6 +413,16 @@ case "$target" in
     ;;
 esac
 
+MOZ_ARG_ENABLE_BOOL(android-resource-constrained,
+[  --enable-android-resource-constrained
+                          exclude hi-res images and similar from the final APK],
+    MOZ_ANDROID_RESOURCE_CONSTRAINED=1)
+
+if test -n "$MOZ_ANDROID_RESOURCE_CONSTRAINED"; then
+    AC_DEFINE(MOZ_ANDROID_RESOURCE_CONSTRAINED, $MOZ_ANDROID_RESOURCE_CONSTRAINED)
+    AC_SUBST(MOZ_ANDROID_RESOURCE_CONSTRAINED)
+fi
+
 MOZ_ARG_WITH_STRING(android-min-sdk,
 [  --with-android-min-sdk=[VER]     Impose a minimum Firefox for Android SDK version],
 [ MOZ_ANDROID_MIN_SDK_VERSION=$withval ])

mobile/android/base/AppConstants.java.in

@@ -137,6 +137,17 @@ public class AppConstants {
     null;
 #endif
 
+    /**
+     * Whether this APK was built with constrained resources --
+     * no xhdpi+ images, for example.
+     */
+    public static final boolean MOZ_ANDROID_RESOURCE_CONSTRAINED =
+#ifdef MOZ_ANDROID_RESOURCE_CONSTRAINED
+    true;
+#else
+    false;
+#endif
+
     public static final boolean MOZ_SERVICES_HEALTHREPORT =
 #ifdef MOZ_SERVICES_HEALTHREPORT
     true;

mobile/android/base/Makefile.in

@@ -370,6 +370,7 @@ $(1): $$(call mkdir_deps,$(filter-out ./,$(dir $(3) $(4) $(5)))) $(2)
 		-F $(3) \
 		-J $(4) \
 		--output-text-symbols $(5) \
+		$(if $(MOZ_ANDROID_RESOURCE_CONSTRAINED),-c hdpi,) \
 		--ignore-assets "$$(ANDROID_AAPT_IGNORE)"
 endef