Updates Android.bp for new pdfium

Rewrite Android.bp to follow the new BUILD.gn structure.

Will try to set up auto update in following changes.

Bug: 155031873
Change-Id: I4a0632e1f5220ecbd257153a647b594a038f1229
Merged-Id: I4a0632e1f5220ecbd257153a647b594a038f1229
diff --git a/core/fxcrt/Android.bp b/core/fxcrt/Android.bp
new file mode 100644
index 0000000..cfbe939
--- /dev/null
+++ b/core/fxcrt/Android.bp
@@ -0,0 +1,34 @@
+cc_library_static {
+    name: "libpdfium-fxcrt",
+    defaults: ["pdfium-core"],
+
+    visibility: ["//external/pdfium:__subpackages__"],
+
+    header_libs: [
+        "libandroidicu_headers",
+    ],
+
+    export_header_lib_headers: [
+        "libandroidicu_headers",
+    ],
+
+    static_libs: [
+        "libpdfium-third_party-base",
+    ],
+
+    shared_libs: [
+        "libandroidicu",
+    ],
+
+    exclude_srcs: [
+        // is_win
+        "cfx_fileaccess_windows.cpp",
+        // pdf_enable_xfa
+        "cfx_memorystream.cpp",
+    ],
+
+    srcs: [
+        "*.cpp",
+        "xml/*.cpp",
+    ],
+}