MacViews: Select all text on right clicking an unfocused text view.

ui/views/style/platform_style_mac.mm

Index: ui/views/style/platform_style_mac.mm
diff --git a/ui/views/style/platform_style_mac.mm b/ui/views/style/platform_style_mac.mm
index c5e08146b23fdf7c6b551460b27dc00520019ec9..3785d835bdbc7952d2cac77926aa9e77a1247767 100644
--- a/ui/views/style/platform_style_mac.mm
+++ b/ui/views/style/platform_style_mac.mm
@@ -24,6 +24,7 @@
 const bool PlatformStyle::kDefaultLabelButtonHasBoldFont = false;
 const bool PlatformStyle::kDialogDefaultButtonCanBeCancel = false;
 const bool PlatformStyle::kSelectWordOnRightClick = true;
+const bool PlatformStyle::kSelectAllOnRightClickWhenUnfocused = true;
 const bool PlatformStyle::kTreeViewHasFocusRing = true;
 const bool PlatformStyle::kTreeViewSelectionPaintsEntireRow = true;
 const bool PlatformStyle::kUseRipples = false;