repro for crbug.com/663886

build/config/compiler/BUILD.gn

Index: build/config/compiler/BUILD.gn
diff --git a/build/config/compiler/BUILD.gn b/build/config/compiler/BUILD.gn
index 4197228e9cc0245df2f030c1f106504140455001..c077f70ed1c4f248a7506fb218f5b72559e35690 100644
--- a/build/config/compiler/BUILD.gn
+++ b/build/config/compiler/BUILD.gn
@@ -71,7 +71,7 @@ declare_args() {
   # Linux & Mac favor speed over size.
   # TODO(brettw) it's weird that Mac and desktop Linux are different. We should
   # explore favoring size over speed in this case as well.
-  optimize_for_size = is_android || is_ios
+  optimize_for_size = true #is_android || is_ios
 
   # Enable fatal linker warnings. Building Chromium with certain versions
   # of binutils can cause linker warning.
@@ -237,6 +237,8 @@ config("compiler") {
     defines += [ "CR_CLANG_REVISION=$clang_revision" ]
   }
 
+  cflags += [ "-g" ]
+
   # Non-Mac Posix compiler flags setup.
   # -----------------------------------
   if (is_posix && !(is_mac || is_ios)) {