Move title creation logic to native

chrome/browser/android/compositor/layer_title_cache.cc

Index: chrome/browser/android/compositor/layer_title_cache.cc
diff --git a/chrome/browser/android/compositor/layer_title_cache.cc b/chrome/browser/android/compositor/layer_title_cache.cc
index 1cd7755e9f3747a70dac2bced95bc7551e10259b..86ff62e03bb00abdc59a0a0dd69cca2bf0f48670 100644
--- a/chrome/browser/android/compositor/layer_title_cache.cc
+++ b/chrome/browser/android/compositor/layer_title_cache.cc
@@ -102,6 +102,15 @@ DecorationTitle* LayerTitleCache::GetTitleLayer(int tab_id) {
   return layer_cache_.Lookup(tab_id);
 }
 
+void LayerTitleCache::BuildTitleLayer(int tab_id) {

[David Trainor- moved to gerrit, 2016/09/09 05:29:09]

Should this logic just live in GetTitleLayer?

[mdjones, 2016/09/09 15:40:13]

Done.

+  if (layer_cache_.Lookup(tab_id))
+    return;
+
+  JNIEnv* env = base::android::AttachCurrentThread();
+  Java_LayerTitleCache_buildUpdatedTitle(env, weak_java_title_cache_.get(env),
+      tab_id);
+}
+
 void LayerTitleCache::SetResourceManager(
     ui::ResourceManager* resource_manager) {
   resource_manager_ = resource_manager;