Revert 129220 - M20 Ash: Animate window header transition from active to inactive

ash/wm/frame_painter.cc

Index: ash/wm/frame_painter.cc
===================================================================
--- ash/wm/frame_painter.cc	(revision 129226)
+++ ash/wm/frame_painter.cc	(working copy)
@@ -14,7 +14,6 @@
 #include "third_party/skia/include/core/SkShader.h"
 #include "ui/aura/client/aura_constants.h"
 #include "ui/aura/window.h"
-#include "ui/base/animation/slide_animation.h"
 #include "ui/base/hit_test.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/base/theme_provider.h"
@@ -69,14 +68,11 @@
 // inset to preserve alignment with the NTP image, or else we'll break a bunch
 // of existing themes.  We do something similar on OS X for the same reason.
 const int kThemeFrameBitmapOffsetX = 5;
-// Duration of crossfade animation for activating and deactivating frame.
-const int kActivationCrossfadeDurationMs = 200;
 
 // Tiles an image into an area, rounding the top corners.  Samples the |bitmap|
 // starting |bitmap_offset_x| pixels from the left of the image.
 void TileRoundRect(gfx::Canvas* canvas,
                    int x, int y, int w, int h,
-                   SkPaint* paint,
                    const SkBitmap& bitmap,
                    int corner_radius,
                    int bitmap_offset_x) {
@@ -94,17 +90,19 @@
   SkPath path;
   path.addRoundRect(rect, radii, SkPath::kCW_Direction);
 
+  SkPaint paint;
   SkShader* shader = SkShader::CreateBitmapShader(bitmap,
                                                   SkShader::kRepeat_TileMode,
                                                   SkShader::kRepeat_TileMode);
-  paint->setShader(shader);
+  paint.setShader(shader);
+  paint.setXfermodeMode(SkXfermode::kSrcOver_Mode);
   // CreateBitmapShader returns a Shader with a reference count of one, we
   // need to unref after paint takes ownership of the shader.
   shader->unref();
   // Adjust canvas to compensate for image sampling offset, draw, then adjust
   // back. This is cheaper than pushing/popping the entire canvas state.
   canvas->sk_canvas()->translate(SkIntToScalar(-bitmap_offset_x), 0);
-  canvas->sk_canvas()->drawPath(path, *paint);
+  canvas->sk_canvas()->drawPath(path, paint);
   canvas->sk_canvas()->translate(SkIntToScalar(bitmap_offset_x), 0);
 }
 
@@ -126,10 +124,7 @@
       top_edge_(NULL),
       top_right_corner_(NULL),
       header_left_edge_(NULL),
-      header_right_edge_(NULL),
-      previous_theme_frame_(NULL),
-      crossfade_theme_frame_(NULL),
-      crossfade_animation_(NULL) {
+      header_right_edge_(NULL) {
 }
 
 FramePainter::~FramePainter() {
@@ -266,43 +261,14 @@
                                const SkBitmap* theme_frame,
                                const SkBitmap* theme_frame_overlay) {
 
-  if (previous_theme_frame_ && previous_theme_frame_ != theme_frame) {
-    crossfade_animation_.reset(new ui::SlideAnimation(this));
-    crossfade_theme_frame_ = previous_theme_frame_;
-    crossfade_animation_->SetSlideDuration(kActivationCrossfadeDurationMs);
-    crossfade_animation_->Show();
-  }
-
-  header_frame_bounds_ = gfx::Rect(0, 0, view->width(), theme_frame->height());
-  const int kCornerRadius = 2;
-
-  SkPaint paint;
-  if (crossfade_animation_.get() && crossfade_animation_->is_animating()) {
-    uint8 theme_alpha = crossfade_animation_->GetCurrentValue() * 255;
-
-    // Draw the old header background, clipping the corners to be rounded.
-    paint.setAlpha(255 - theme_alpha);
-    paint.setXfermodeMode(SkXfermode::kPlus_Mode);
-    TileRoundRect(canvas,
-                  0, 0, view->width(), theme_frame->height(),
-                  &paint,
-                  *crossfade_theme_frame_,
-                  kCornerRadius,
-                  kThemeFrameBitmapOffsetX);
-
-    paint.setAlpha(theme_alpha);
-  }
-
   // Draw the header background, clipping the corners to be rounded.
+  const int kCornerRadius = 2;
   TileRoundRect(canvas,
                 0, 0, view->width(), theme_frame->height(),
-                &paint,
                 *theme_frame,
                 kCornerRadius,
                 kThemeFrameBitmapOffsetX);
 
-  previous_theme_frame_ = theme_frame;
-
   // Draw the theme frame overlay, if available.
   if (theme_frame_overlay)
     canvas->DrawBitmapInt(*theme_frame_overlay, 0, 0);
@@ -464,13 +430,6 @@
 }
 
 ///////////////////////////////////////////////////////////////////////////////
-// ui::AnimationDelegate overrides:
-
-void FramePainter::AnimationProgressed(const ui::Animation* animation) {
-  frame_->SchedulePaintInRect(gfx::Rect(header_frame_bounds_));
-}
-
-///////////////////////////////////////////////////////////////////////////////
 // FramePainter, private:
 
 void FramePainter::SetButtonImages(views::ImageButton* button,