Convert frameworks/base/cmds/* to Android.bp

See build/soong/README.md for more information.

Also converts the rest of frameworks/base/tools/streaming_proto.

Bug: 122332340
Test: m checkbuild
Change-Id: I87c500c5464fb1722b4b518d89065f5e1ee29a97
(cherry picked from commit 45c0d71e774c84ec81392393a0fafad398d2838d)
diff --git a/cmds/content/Android.bp b/cmds/content/Android.bp
new file mode 100644
index 0000000..96d1469
--- /dev/null
+++ b/cmds/content/Android.bp
@@ -0,0 +1,7 @@
+// Copyright 2012 The Android Open Source Project
+
+java_binary {
+    name: "content",
+    wrapper: "content",
+    srcs: ["**/*.java"],
+}
diff --git a/cmds/content/Android.mk b/cmds/content/Android.mk
deleted file mode 100644
index 9302e2f..0000000
--- a/cmds/content/Android.mk
+++ /dev/null
@@ -1,15 +0,0 @@
-# Copyright 2012 The Android Open Source Project
-
-LOCAL_PATH:= $(call my-dir)
-
-include $(CLEAR_VARS)
-LOCAL_SRC_FILES := $(call all-subdir-java-files)
-LOCAL_MODULE := content
-include $(BUILD_JAVA_LIBRARY)
-
-include $(CLEAR_VARS)
-LOCAL_MODULE := content
-LOCAL_SRC_FILES := content
-LOCAL_MODULE_CLASS := EXECUTABLES
-LOCAL_MODULE_TAGS := optional
-include $(BUILD_PREBUILT)