Move WebView loader from frameworks/webview/ to frameworks/base/.

The Java-side of the WebView loading lives in frameworks/base/ while the
native side lives in frameworks/webview/. It would be great to be able
to change the JNI interface between these two without having to update
two separate projects.

This CL moves the native side into frameworks/base/.

Bug: 62445369
Test: Run app using WebView (and ensure it loads WebView).
Change-Id: I6915e996b3a035e9d87000ccd11e5fb89deecde7
diff --git a/native/webview/Android.mk b/native/webview/Android.mk
new file mode 100644
index 0000000..a2a93d7
--- /dev/null
+++ b/native/webview/Android.mk
@@ -0,0 +1,19 @@
+#
+# Copyright (C) 2017 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+# Include all the makefiles for subdirectories.
+include $(call all-subdir-makefiles)
+