BoringSSL: roll DEPS and enable dynamic visibility.

third_party/boringssl/BUILD.gn

Index: third_party/boringssl/BUILD.gn
diff --git a/third_party/boringssl/BUILD.gn b/third_party/boringssl/BUILD.gn
index 3308b25f392480e0f7a34d4d1d8be347098bbfed..50d749a42ca5b033bb8926eaa544a448821c8cf6 100644
--- a/third_party/boringssl/BUILD.gn
+++ b/third_party/boringssl/BUILD.gn
@@ -6,6 +6,11 @@
 config("openssl_config") {
   include_dirs = []
   include_dirs += [ "src/include" ]
+  if (is_component_build) {
+    defines += [
+      "BORINGSSL_SHARED_LIBRARY",
+    ]
+  }
 }
 
 # Config internal to this build file.
@@ -26,7 +31,12 @@ component("boringssl") {
   direct_dependent_configs = [ ":openssl_config" ]
 
   cflags = []
-  defines = []
+  defines = [ "BORINGSSL_IMPLEMENTATION" ]
+  if (is_component_build) {
+    defines += [
+      "BORINGSSL_SHARED_LIBRARY",
+    ]
+  }
 
   configs -= [ "//build/config/compiler:chromium_code" ]
   configs += [ "//build/config/compiler:no_chromium_code" ]
@@ -63,15 +73,4 @@ component("boringssl") {
   } else {
     defines += [ "OPENSSL_NO_ASM" ]
   }
-
-  if (is_component_build) {
-    if (!is_win) {
-      configs -= [ "//build/config/gcc:symbol_visibility_hidden" ]
-    }
-    if (is_posix && !is_mac) {
-      # Avoid link failures on Linux x86-64.
-      # See http://rt.openssl.org/Ticket/Display.html?id=2466&user=guest&pass=guest
-      ldflags = [ "-Wl,-Bsymbolic" ]
-    }
-  }
 }