Compile specific parts of the Android build with -O2.

skia/BUILD.gn

Index: skia/BUILD.gn
diff --git a/skia/BUILD.gn b/skia/BUILD.gn
index 86ed5a12d3b040f6854ebc2d6a79490bc0b73815..8cf9fa4d5ab5c6763a99705b1f3f250015155087 100644
--- a/skia/BUILD.gn
+++ b/skia/BUILD.gn
@@ -552,6 +552,11 @@ component("skia") {
   if (skia_support_pdf) {
     deps += [ "//third_party/sfntly" ]
   }
+
+  if (is_android && !is_debug) {
+    configs -= [ "//build/config/compiler:optimize" ]
+    configs += [ "//build/config/compiler:optimize_max" ]
+  }
 }
 
 # Separated out so it can be compiled with different flags for SSE.
@@ -689,6 +694,11 @@ source_set("skia_opts") {
     assert(false, "Need to port cpu specific stuff from skia_library_opts.gyp")
   }
 
+  if (is_android && !is_debug) {
+    configs -= [ "//build/config/compiler:optimize" ]
+    configs += [ "//build/config/compiler:optimize_max" ]
+  }
+
   configs -= [ "//build/config/compiler:chromium_code" ]
   configs += [
     ":skia_config",