Use incognito theme for Tor profile windows

Forces tor profiles to be recognised as 'incognito' for theme.
Also ensures that complementing omnibox theme is used.
Also ensures that complementing dark 'native' theme is used.
Fix brave/brave-browser#1383

Author: petemill

browser/themes/brave_theme_service.cc

@@ -84,6 +84,9 @@ void BraveThemeService::Init(Profile* profile) {
 
 
 SkColor BraveThemeService::GetDefaultColor(int id, bool incognito) const {
+  // Brave Tor profiles are always 'incognito' (for now)
+  if (!incognito && profile()->IsTorProfile())
+    incognito = true;
   const BraveThemeType theme = GetActiveBraveThemeType(profile());
   const base::Optional<SkColor> braveColor = MaybeGetDefaultColorForBraveUi(id, incognito, theme);
   if (braveColor)

browser/ui/views/brave_browser_main_extra_parts_views_linux.cc

@@ -33,7 +33,8 @@ ui::NativeTheme* GetNativeThemeForWindow(aura::Window* window) {
                             BraveThemeService::GetActiveBraveThemeType(profile);
   const bool dark_mode = (
       active_builtin_theme == BraveThemeType::BRAVE_THEME_TYPE_DARK ||
-      profile->GetProfileType() == Profile::INCOGNITO_PROFILE);
+      profile->GetProfileType() == Profile::INCOGNITO_PROFILE ||
+      profile->IsTorProfile());
   if (dark_mode &&
       BrowserView::GetBrowserViewForNativeWindow(window)) {
     return ui::NativeThemeDarkAura::instance();

browser/ui/views/frame/brave_browser_frame.cc

@@ -28,7 +28,8 @@ const ui::NativeTheme* BraveBrowserFrame::GetNativeTheme() const {
                               browser_view_->browser()->profile());
   if (active_builtin_theme == BraveThemeType::BRAVE_THEME_TYPE_DARK ||
       browser_view_->browser()->profile()->GetProfileType() ==
-          Profile::INCOGNITO_PROFILE) {
+          Profile::INCOGNITO_PROFILE ||
+      browser_view_->browser()->profile()->IsTorProfile()) {
     return ui::NativeThemeDarkAura::instance();
   }
 #endif

browser/ui/views/location_bar/brave_location_bar_view.cc

@@ -73,7 +73,8 @@ OmniboxTint BraveLocationBarView::GetTint() {
   // Match the user-selectable brave theme, even if there is a theme extension
   // installed, allowing non-extension-themeable elements to fit in better with
   // a theme extension.
-  if (profile()->GetProfileType() == Profile::INCOGNITO_PROFILE) {
+  if (profile()->GetProfileType() == Profile::INCOGNITO_PROFILE ||
+      profile()->IsTorProfile()) {
     return OmniboxTint::PRIVATE; // special extra enum value
   }
   // TODO: BraveThemeService can have a simpler get dark / light function