Make activities have a thick border when in overview mode part 1

athena/content/web_activity.cc

Index: athena/content/web_activity.cc
diff --git a/athena/content/web_activity.cc b/athena/content/web_activity.cc
index 34a21d0366473960fa2f7fba8c13645b91697a50..85ede624a7f6383ceb3c3bc5f9e846e920038617 100644
--- a/athena/content/web_activity.cc
+++ b/athena/content/web_activity.cc
@@ -465,6 +465,17 @@ gfx::ImageSkia WebActivity::GetOverviewModeImage() {
   return overview_mode_image_;
 }
 
+void WebActivity::PrepareContentsForOverview() {
+  // Turn on fast resizing to avoid re-laying out the web contents when
+  // entering / exiting overview mode.
+  web_view_->SetFastResize(true);
+}
+
+void WebActivity::ResetContentsView() {
+  web_view_->SetFastResize(false);
+  web_view_->Layout();
+}
+
 void WebActivity::TitleWasSet(content::NavigationEntry* entry,
                               bool explicit_set) {
   ActivityManager::Get()->UpdateActivity(this);