Introduce AndroidFocusRules and NativeWidgetAndroid

chrome/browser/chrome_browser_main_android.cc

Index: chrome/browser/chrome_browser_main_android.cc
diff --git a/chrome/browser/chrome_browser_main_android.cc b/chrome/browser/chrome_browser_main_android.cc
index 4fd6d9d710200af8f35ce61a540c1c81723864ef..7bdfc1892cf330bb7fc9531aaf6cbbc0d3923bf9 100644
--- a/chrome/browser/chrome_browser_main_android.cc
+++ b/chrome/browser/chrome_browser_main_android.cc
@@ -28,6 +28,10 @@
 #include "ui/base/resource/resource_bundle_android.h"
 #include "ui/base/ui_base_paths.h"
 
+#if defined(USE_AURA)
+#include "ui/wm/android/window_tree_host_manager.h"
+#endif
+
 namespace {
 
 void DeleteFileTask(
@@ -46,6 +50,14 @@ ChromeBrowserMainPartsAndroid::ChromeBrowserMainPartsAndroid(
 ChromeBrowserMainPartsAndroid::~ChromeBrowserMainPartsAndroid() {
 }
 
+#if defined(USE_AURA)
+void ChromeBrowserMainPartsAndroid::InitAura() {
+  window_tree_host_manager_.reset(new WindowTreeHostManager(
+      gfx::Size(800, 600), content::GetContextFactory()));
+  window_tree_host_manager_->host()->Show();
+}
+#endif
+
 int ChromeBrowserMainPartsAndroid::PreCreateThreads() {
   TRACE_EVENT0("startup", "ChromeBrowserMainPartsAndroid::PreCreateThreads")
 
@@ -80,6 +92,13 @@ int ChromeBrowserMainPartsAndroid::PreCreateThreads() {
   return ChromeBrowserMainParts::PreCreateThreads();
 }
 
+void ChromeBrowserMainPartsAndroid::PreProfileInit() {
+#if defined(USE_AURA)
+  InitAura();
+#endif
+  ChromeBrowserMainParts::PreProfileInit();
+}
+
 void ChromeBrowserMainPartsAndroid::PostProfileInit() {
   ChromeBrowserMainParts::PostProfileInit();