GN: Enable blink and (nearly) all of content in android build

build/config/android/config.gni

Index: build/config/android/config.gni
diff --git a/build/config/android/config.gni b/build/config/android/config.gni
index 5c1be46a44ad738c2c5e37283cb68a9c92af4e3b..760328095fc83e90a9b0b9178cf2b4992939915d 100644
--- a/build/config/android/config.gni
+++ b/build/config/android/config.gni
@@ -20,6 +20,11 @@ if (is_android) {
     android_default_keystore_path = "//build/android/ant/chromium-debug.keystore"
     android_default_keystore_name = "chromiumdebugkey"
     android_default_keystore_password = "chromium"
+
+    # This is a unique identifier for a given build. It's used for
+    # identifying various build artifacts corresponding to a particular build of
+    # chrome (e.g. where to find archived symbols).
+    android_chrome_build_id = "\"\""
   }
 
   if (is_android_webview_build) {