Add all platform files to symbolizer build

The posix files will build for all but the windows platform.
The windows files will only build for the windows platform.

Change-Id: I0534020a39bf495c8320d1d54e4660fada64a7d4

BUILD

diff --git a/BUILD b/BUILD
index 4dd68d7..104b5bb 100644
--- a/BUILD
+++ b/BUILD
@@ -694,12 +694,15 @@
     srcs = [
         "src/profiling/symbolizer/filesystem.h",
         "src/profiling/symbolizer/filesystem_posix.cc",
+        "src/profiling/symbolizer/filesystem_windows.cc",
         "src/profiling/symbolizer/local_symbolizer.cc",
         "src/profiling/symbolizer/local_symbolizer.h",
         "src/profiling/symbolizer/scoped_read_mmap.h",
         "src/profiling/symbolizer/scoped_read_mmap_posix.cc",
+        "src/profiling/symbolizer/scoped_read_mmap_windows.cc",
         "src/profiling/symbolizer/subprocess.h",
         "src/profiling/symbolizer/subprocess_posix.cc",
+        "src/profiling/symbolizer/subprocess_windows.cc",
         "src/profiling/symbolizer/symbolizer.cc",
         "src/profiling/symbolizer/symbolizer.h",
     ],