Export include dirs from libpdfium

Test: m -j checkbuild
Change-Id: I2422a04a17d64699e5f9262209382cd23183e242
Merged-In: I2422a04a17d64699e5f9262209382cd23183e242
(cherry picked from commit 328db09cb4a16533cc4e02bb054bf5e710fedb03)
diff --git a/Android.bp b/Android.bp
index 1883094..b212d4e 100644
--- a/Android.bp
+++ b/Android.bp
@@ -21,7 +21,10 @@
 
 cc_library_headers {
     name: "pdfium-headers",
-    export_include_dirs: ["."],
+    export_include_dirs: [
+        ".",
+        "public",
+    ],
 }
 
 subdirs = [
diff --git a/fpdfsdk/pdfium.bp b/fpdfsdk/pdfium.bp
index c8859a6..93bcd24 100644
--- a/fpdfsdk/pdfium.bp
+++ b/fpdfsdk/pdfium.bp
@@ -61,4 +61,7 @@
         "src/fsdk_mgr.cpp",
         "src/fsdk_rendercontext.cpp",
     ],
+
+    export_include_dirs: ["include"],
+    export_header_lib_headers: ["pdfium-headers"],
 }