build: Tweak linker memory usage for android static build

build/toolchain/concurrent_links.gni

Index: build/toolchain/concurrent_links.gni
diff --git a/build/toolchain/concurrent_links.gni b/build/toolchain/concurrent_links.gni
index 75d4932d5c524d07e8713a9db22dc4a2f965d5bd..dbd174257903591ccaefe5f0d51a0ad1eae9aa20 100644
--- a/build/toolchain/concurrent_links.gni
+++ b/build/toolchain/concurrent_links.gni
@@ -28,6 +28,8 @@ if (concurrent_links == -1) {
     _args = [ "--mem_per_link_gb=5" ]
   } else if (is_mac) {
     _args = [ "--mem_per_link_gb=4" ]
+  } else if (is_android && !is_component_build) {
+    _args = [ "--mem_per_link_gb=25" ]

[Dirk Pranke, 2016/08/26 17:50:45]

is this number correct for both debug and release? it's a big change, so if we
want to land this as-is you need to make sure we make sure cycle time goes down,
not up :).

[boliu, 2016/08/26 17:58:16]

this was measured when I copied the config from the official release bots, so
definitely not debug.

I thought debug+static build isn't a thing anymore though?

I'm guessing the next config that matters most is symbol_level, and 25G is
measured at symbol_level=2. I could measure 1 and 0 if you want?

   } else {
     _args = []
   }