SL-20348 Focus should be in the chat bar when the Conversations floater is opened

indra/newview/llfloaterimcontainer.cpp

@@ -289,6 +289,9 @@ void LLFloaterIMContainer::onOpen(const LLSD& key)
 	LLMultiFloater::onOpen(key);
 	reSelectConversation();
 	assignResizeLimits();
+
+	LLFloaterIMSessionTab* session_floater = LLFloaterIMSessionTab::getConversation(mSelectedSession);
+	session_floater->onOpen(key);
 }
 
 // virtual

indra/newview/llfloaterimsessiontab.cpp

@@ -986,6 +986,8 @@ void LLFloaterIMSessionTab::onOpen(const LLSD& key)
 	}
 
 	mInputButtonPanel->setVisible(isTornOff());
+
+	setFocus(TRUE);
 }