[Chromecast] Use symbol_level=1 for 32-bit GCC toolchains.

android_webview/system_webview_apk_tmpl.gni

Index: android_webview/system_webview_apk_tmpl.gni
diff --git a/android_webview/system_webview_apk_tmpl.gni b/android_webview/system_webview_apk_tmpl.gni
index 8b377162d52658ac40c5a965719b7039cc72c79e..ea18215c07be035ad84681ea940d37026ea9fc3e 100644
--- a/android_webview/system_webview_apk_tmpl.gni
+++ b/android_webview/system_webview_apk_tmpl.gni
@@ -4,6 +4,7 @@
 
 import("//build/config/android/config.gni")
 import("//build/config/android/rules.gni")
+import("//build/config/compiler/compiler.gni")
 
 template("system_webview_apk_tmpl") {
   android_apk(target_name) {
@@ -24,7 +25,7 @@ template("system_webview_apk_tmpl") {
     _native_lib_file =
         rebase_path("$root_gen_dir/CHROME_VERSION.json", root_out_dir)
     native_lib_version_arg = "@FileArg($_native_lib_file:full-quoted)"
-    if (build_apk_secondary_abi && android_64bit_target_cpu) {
+    if (build_apk_secondary_abi && is_target_cpu_64bit) {
       secondary_abi_shared_libraries = [ "//android_webview:libwebviewchromium($android_secondary_abi_toolchain)" ]
     }