[GTK] Remove incognito frame tint

R=pkasting

Bug: 1160568
Change-Id: I070f79cbae98df5c958f34f5c930efe817e67962
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2622003
Commit-Queue: Thomas Anderson <thomasanderson@chromium.org>
Commit-Queue: Peter Kasting <pkasting@chromium.org>
Auto-Submit: Thomas Anderson <thomasanderson@chromium.org>
Reviewed-by: Peter Kasting <pkasting@chromium.org>
Cr-Commit-Position: refs/heads/master@{#842243}

chrome/browser/ui/views/frame/opaque_browser_frame_view.cc

@@ -492,7 +492,6 @@ void OpaqueBrowserFrameView::OnPaint(gfx::Canvas* canvas) {
   frame_background_->set_frame_color(frame_color);
   frame_background_->set_use_custom_frame(frame()->UseCustomFrame());
   frame_background_->set_is_active(active);
-  frame_background_->set_incognito(browser_view()->IsIncognito());
   frame_background_->set_theme_image(GetFrameImage());
   const int y_inset =
       browser_view()->IsTabStripVisible()

ui/gtk/gtk_ui.cc

@@ -932,19 +932,14 @@ void GtkUi::UpdateColors() {
     const std::string header_selector_inactive = header_selector + ":backdrop";
     const SkColor frame_color =
         SkColorSetA(GetBgColor(header_selector), SK_AlphaOPAQUE);
-    const SkColor frame_color_incognito =
-        color_utils::HSLShift(frame_color, kDefaultTintFrameIncognito);
     const SkColor frame_color_inactive =
         SkColorSetA(GetBgColor(header_selector_inactive), SK_AlphaOPAQUE);
-    const SkColor frame_color_incognito_inactive =
-        color_utils::HSLShift(frame_color_inactive, kDefaultTintFrameIncognito);
 
     color_map[ThemeProperties::COLOR_FRAME_ACTIVE] = frame_color;
     color_map[ThemeProperties::COLOR_FRAME_INACTIVE] = frame_color_inactive;
-    color_map[ThemeProperties::COLOR_FRAME_ACTIVE_INCOGNITO] =
-        frame_color_incognito;
+    color_map[ThemeProperties::COLOR_FRAME_ACTIVE_INCOGNITO] = frame_color;
     color_map[ThemeProperties::COLOR_FRAME_INACTIVE_INCOGNITO] =
-        frame_color_incognito_inactive;
+        frame_color_inactive;
 
     // Compose the window color on the frame color to ensure the resulting tab
     // color is opaque.
@@ -969,20 +964,12 @@ void GtkUi::UpdateColors() {
         background_tab_text_color;
     color_map[ThemeProperties::
                   COLOR_TAB_FOREGROUND_INACTIVE_FRAME_ACTIVE_INCOGNITO] =
-        color_utils::BlendForMinContrast(
-            color_utils::HSLShift(background_tab_text_color,
-                                  kDefaultTintFrameIncognito),
-            frame_color_incognito)
-            .color;
+        background_tab_text_color;
     color_map[ThemeProperties::COLOR_TAB_FOREGROUND_INACTIVE_FRAME_INACTIVE] =
         background_tab_text_color_inactive;
     color_map[ThemeProperties::
                   COLOR_TAB_FOREGROUND_INACTIVE_FRAME_INACTIVE_INCOGNITO] =
-        color_utils::BlendForMinContrast(
-            color_utils::HSLShift(background_tab_text_color_inactive,
-                                  kDefaultTintFrameIncognito),
-            frame_color_incognito_inactive)
-            .color;
+        background_tab_text_color_inactive;
 
     color_map[ThemeProperties::COLOR_OMNIBOX_TEXT] =
         native_theme_->GetSystemColor(

ui/gtk/gtk_util.cc

@@ -116,11 +116,6 @@ int GetKeyEventProperty(const ui::KeyEvent& key_event,
 
 namespace gtk {
 
-// TODO(thomasanderson): ThemeService has a whole interface just for reading
-// default constants. Figure out what to do with that more long term; for now,
-// just copy the constant itself here.
-const color_utils::HSL kDefaultTintFrameIncognito = {-1, 0.2f, 0.35f};
-
 void GtkInitFromCommandLine(const base::CommandLine& command_line) {
   CommonInitFromCommandLine(command_line);
 }

ui/gtk/gtk_util.h

@@ -26,18 +26,12 @@ namespace base {
 class CommandLine;
 }
 
-namespace color_utils {
-struct HSL;
-}
-
 namespace ui {
 class KeyEvent;
 }
 
 namespace gtk {
 
-extern const color_utils::HSL kDefaultTintFrameIncognito;
-
 void GtkInitFromCommandLine(const base::CommandLine& command_line);
 
 // Sets |dialog| as transient for |parent|, which will keep it on top and center

ui/gtk/native_theme_gtk.cc

@@ -9,7 +9,6 @@
 #include "ui/gfx/color_palette.h"
 #include "ui/gfx/color_utils.h"
 #include "ui/gfx/geometry/rect.h"
-#include "ui/gfx/skbitmap_operations.h"
 #include "ui/gfx/skia_util.h"
 #include "ui/gtk/gtk_util.h"
 
@@ -711,13 +710,7 @@ void NativeThemeGtk::PaintFrameTopArea(
 
   SkBitmap bitmap =
       GetWidgetBitmap(rect.size(), context, BG_RENDER_RECURSIVE, false);
-
-  if (frame_top_area.incognito) {
-    bitmap = SkBitmapOperations::CreateHSLShiftedBitmap(
-        bitmap, kDefaultTintFrameIncognito);
-    bitmap.setImmutable();
-  }
-
+  bitmap.setImmutable();
   canvas->drawImage(cc::PaintImage::CreateFromBitmap(std::move(bitmap)),
                     rect.x(), rect.y());
 }

ui/native_theme/native_theme.h

@@ -172,7 +172,6 @@ class NATIVE_THEME_EXPORT NativeTheme {
     // Distinguishes between active (foreground) and inactive
     // (background) window frame styles.
     bool is_active;
-    bool incognito;
     // True when Chromium renders the titlebar.  False when the window
     // manager renders the titlebar.
     bool use_custom_frame;

ui/views/window/custom_frame_view.cc

@@ -192,7 +192,6 @@ void CustomFrameView::OnPaint(gfx::Canvas* canvas) {
   frame_background_->set_frame_color(GetFrameColor());
   frame_background_->set_use_custom_frame(true);
   frame_background_->set_is_active(ShouldPaintAsActive());
-  frame_background_->set_incognito(false);
   const gfx::ImageSkia frame_image = GetFrameImage();
   frame_background_->set_theme_image(frame_image);
   frame_background_->set_top_area_height(frame_image.height());

ui/views/window/frame_background.cc

@@ -105,7 +105,6 @@ void FrameBackground::PaintMaximized(gfx::Canvas* canvas,
   ui::NativeTheme::ExtraParams params;
   params.frame_top_area.use_custom_frame = use_custom_frame_;
   params.frame_top_area.is_active = is_active_;
-  params.frame_top_area.incognito = incognito_;
   params.frame_top_area.default_background_color = frame_color_;
   native_theme->Paint(canvas->sk_canvas(), ui::NativeTheme::kFrameTopArea,
                       ui::NativeTheme::kNormal,

ui/views/window/frame_background.h

@@ -36,9 +36,6 @@ class VIEWS_EXPORT FrameBackground {
   // Sets whether the frame to be drawn should have focus.
   void set_is_active(bool is_active) { is_active_ = is_active; }
 
-  // Sets whether the frame to be drawn is in incognito mode.
-  void set_incognito(bool incognito) { incognito_ = incognito; }
-
   // Sets the theme image for the top of the window.  May be null (empty).
   // Memory is owned by the caller.
   void set_theme_image(const gfx::ImageSkia& image) { theme_image_ = image; }
@@ -90,7 +87,6 @@ class VIEWS_EXPORT FrameBackground {
   SkColor frame_color_ = 0;
   bool use_custom_frame_ = true;
   bool is_active_ = true;
-  bool incognito_ = false;
   gfx::ImageSkia theme_image_;
   int theme_image_y_inset_ = 0;
   gfx::ImageSkia theme_overlay_image_;