DO NOT MERGE. Use the new -knowntags option to suppress warnings for some known tags.

Change-Id: Ifa46210d1e590e5298376539b6099452d85ef93d
diff --git a/Android.mk b/Android.mk
index 901f212..5ef0e1f 100644
--- a/Android.mk
+++ b/Android.mk
@@ -356,6 +356,7 @@
 # The since flag (-since N.xml API_LEVEL) is used to add API Level information
 # to the reference documentation. Must be in order of oldest to newest.
 framework_docs_LOCAL_DROIDDOC_OPTIONS := \
+    -knowntags ./frameworks/base/docs/knowntags.txt \
     -since ./frameworks/base/api/1.xml 1 \
     -since ./frameworks/base/api/2.xml 2 \
     -since ./frameworks/base/api/3.xml 3 \
@@ -369,7 +370,10 @@
 		-error 114 \
 		-overview $(LOCAL_PATH)/core/java/overview.html
 
-framework_docs_LOCAL_ADDITIONAL_JAVA_DIR:=$(call intermediates-dir-for,JAVA_LIBRARIES,framework)
+framework_docs_LOCAL_ADDITIONAL_JAVA_DIR:= $(call intermediates-dir-for,JAVA_LIBRARIES,framework)
+
+framework_docs_LOCAL_ADDITIONAL_DEPENDENCIES := \
+    frameworks/base/docs/knowntags.txt
 
 sample_dir := development/samples
 
@@ -461,6 +465,7 @@
 LOCAL_DROIDDOC_SOURCE_PATH:=$(framework_docs_LOCAL_DROIDDOC_SOURCE_PATH)
 LOCAL_DROIDDOC_HTML_DIR:=$(framework_docs_LOCAL_DROIDDOC_HTML_DIR)
 LOCAL_ADDITIONAL_JAVA_DIR:=$(framework_docs_LOCAL_ADDITIONAL_JAVA_DIR)
+LOCAL_ADDITIONAL_DEPENDENCIES:=$(framework_docs_LOCAL_ADDITIONAL_DEPENDENCIES)
 
 LOCAL_MODULE := api-stubs
 
@@ -491,6 +496,7 @@
 LOCAL_DROIDDOC_SOURCE_PATH:=$(framework_docs_LOCAL_DROIDDOC_SOURCE_PATH)
 LOCAL_DROIDDOC_HTML_DIR:=$(framework_docs_LOCAL_DROIDDOC_HTML_DIR)
 LOCAL_ADDITIONAL_JAVA_DIR:=$(framework_docs_LOCAL_ADDITIONAL_JAVA_DIR)
+LOCAL_ADDITIONAL_DEPENDENCIES:=$(framework_docs_LOCAL_ADDITIONAL_DEPENDENCIES)
 
 LOCAL_MODULE := doc-comment-check
 
@@ -519,6 +525,7 @@
 LOCAL_DROIDDOC_SOURCE_PATH:=$(framework_docs_LOCAL_DROIDDOC_SOURCE_PATH)
 LOCAL_DROIDDOC_HTML_DIR:=$(framework_docs_LOCAL_DROIDDOC_HTML_DIR)
 LOCAL_ADDITIONAL_JAVA_DIR:=$(framework_docs_LOCAL_ADDITIONAL_JAVA_DIR)
+LOCAL_ADDITIONAL_DEPENDENCIES:=$(framework_docs_LOCAL_ADDITIONAL_DEPENDENCIES)
 
 LOCAL_MODULE := offline-sdk
 
@@ -560,6 +567,7 @@
 LOCAL_DROIDDOC_SOURCE_PATH:=$(framework_docs_LOCAL_DROIDDOC_SOURCE_PATH)
 LOCAL_DROIDDOC_HTML_DIR:=$(framework_docs_LOCAL_DROIDDOC_HTML_DIR)
 LOCAL_ADDITIONAL_JAVA_DIR:=$(framework_docs_LOCAL_ADDITIONAL_JAVA_DIR)
+LOCAL_ADDITIONAL_DEPENDENCIES:=$(framework_docs_LOCAL_ADDITIONAL_DEPENDENCIES)
 
 LOCAL_MODULE := online-sdk
 
@@ -587,6 +595,7 @@
 LOCAL_DROIDDOC_SOURCE_PATH:=$(framework_docs_LOCAL_DROIDDOC_SOURCE_PATH)
 LOCAL_DROIDDOC_HTML_DIR:=$(framework_docs_LOCAL_DROIDDOC_HTML_DIR)
 LOCAL_ADDITIONAL_JAVA_DIR:=$(call intermediates-dir-for,JAVA_LIBRARIES,framework)
+LOCAL_ADDITIONAL_DEPENDENCIES:=$(framework_docs_LOCAL_ADDITIONAL_DEPENDENCIES)
 
 LOCAL_MODULE := hidden
 LOCAL_DROIDDOC_OPTIONS:=\