Android: Reduce link pool when R8 or Android Lint is enabled.

Attempt to fix bots running out of memory.

Bug: 1104913
Change-Id: If2c66c41aad285dd8fe526714a43e2917d046e29
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2293252
Commit-Queue: Andrew Grieve <agrieve@chromium.org>
Reviewed-by: Peter Wen <wnwen@chromium.org>
Cr-Commit-Position: refs/heads/master@{#787880}

build/toolchain/concurrent_links.gni

@@ -7,6 +7,7 @@
 # in the context of the default_toolchain, so we can at least check for that.
 assert(current_toolchain == default_toolchain)
 
+import("//build/config/android/config.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/mac/symbols.gni")
 import("//build/config/sanitizers/sanitizers.gni")
@@ -47,10 +48,14 @@ if (concurrent_links == -1) {
   } else if (is_android && !is_component_build && symbol_level == 2) {
     # Full debug symbols require large memory for link.
     _args = [ "--mem_per_link_gb=25" ]
-  } else if (is_android && !is_debug && !using_sanitizer && symbol_level < 2) {
-    # Increase the number of concurrent links for release bots. Debug builds
-    # make heavier use of ProGuard, and so should not be raised. Sanitizers also
-    # increase the memory overhead.
+  } else if (is_android && !is_debug && !using_sanitizer && is_java_debug &&
+             disable_android_lint && symbol_level < 2) {
+    # The link pool is also shared with:
+    # * ProGuard / R8
+    # * Android Lint
+    # Increase the number of concurrent links for release bots that have
+    # ProGuard and Lint disabled, and that do not enable sanitizers (which use a
+    # lot of RAM).
     if (symbol_level == 1) {
       _args = [ "--mem_per_link_gb=6" ]
     } else {