Split Chromoting's Disconnect button text into 2 parts: name + hotkeys.

remoting/host/disconnect_window.cc

Index: remoting/host/disconnect_window.cc
diff --git a/remoting/host/disconnect_window.cc b/remoting/host/disconnect_window.cc
index 8036856604816e08ee9731f59f0ff89d912cf551..f225dc41109bbdea44d769a86358339524042251 100644
--- a/remoting/host/disconnect_window.cc
+++ b/remoting/host/disconnect_window.cc
@@ -8,5 +8,16 @@ namespace remoting {
 // TODO(garykac): These strings should be localized.
 const char DisconnectWindow::kTitle[] = "Remoting";
 const char DisconnectWindow::kSharingWith[] = "Sharing with: ";
-const char DisconnectWindow::kDisconnectButton[] = "Disconnect (Ctrl+Alt+Esc)";
+const char DisconnectWindow::kDisconnectButton[] = "Disconnect";
+
+const char DisconnectWindow::kDisconnectKeysLinux[] = " (Ctrl+Alt+Esc)";
+// For Mac: Ctrl+Option+Esc
+// Ctrl: U+2303 = 0xE2 0x8C 0x83 (utf8)
+// Option: U+2325 = 0xE2 0x8C 0xA5 (utf8)
+// Escape: According to http://en.wikipedia.org/wiki/Esc_key, the ISO 9995
+//         standard specifies the U+238B glyph for Escape. Although this
+//         doesn't appear to be in common use.
+const char DisconnectWindow::kDisconnectKeysMac[] =
+    " (\xE2\x8C\x83+\xE2\x8C\xA5+Esc)";
+const char DisconnectWindow::kDisconnectKeysWin[] = " (Ctrl+Alt+Esc)";
 }