Fix Trichrome.ssargs file for arm64

Adds --no-native to TrichromeLibrary.apk so that supersize does not try
and break down the 32-bit libmonochrome.so (same as we do for
Monochrome.apk)

Bug: 1126337
Change-Id: Ia91c3179b3a3877671689661479b1e0a20962f4d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2404959
Auto-Submit: Andrew Grieve <agrieve@chromium.org>
Reviewed-by: Samuel Huang <huangs@chromium.org>
Commit-Queue: Samuel Huang <huangs@chromium.org>
Cr-Commit-Position: refs/heads/master@{#806196}

chrome/android/trichrome.gni

@@ -209,17 +209,25 @@ template("trichrome_library_apk_tmpl") {
 # parameters, and is used by SuperSize-archive to create multi-container .size
 # files. This is used to support SuperSize on Trichrome.
 template("write_ssargs_trichrome") {
+  if (target_cpu == "arm64" || target_cpu == "x64") {
+    # Ignore secondary abi libmonochrome in library apk in favor of primary one
+    # in TrichromeWebView.
+    _library_args = " --no-native"
+  } else {
+    _library_args = ""
+  }
+
   # Base names (i.e., no full path) are used because .ssargs files specifies
   # files using paths relative to itself. It is expected for |ssargs_path| to
   # be in the same directory as all Trichrome files whose sizes are measured
   # by SuperSize.
-  ssargs_lines = [
+  _lines = [
     "# Written by build target \"${target_name}.\"",
-    "Library -f ${invoker.trichrome_library_basename}",
+    "Library -f ${invoker.trichrome_library_basename}$_library_args",
     "# Add --no-native to Chrome as workaround for crbug.com/1103271.",
     "Chrome -f ${invoker.trichrome_chrome_basename} --no-native",
     "WebView -f ${invoker.trichrome_webview_basename}",
   ]
 
-  write_file(invoker.ssargs_path, ssargs_lines)
+  write_file(invoker.ssargs_path, _lines)
 }