Support chrome app frame colors on ChromeOS.

ash/frame/default_header_painter.cc

Index: ash/frame/default_header_painter.cc
diff --git a/ash/frame/default_header_painter.cc b/ash/frame/default_header_painter.cc
index 0819d4dffd25f082a06c1712312d55e2005f9075..0073f836adcc5a1b074fc98a3be2a1568033e3c5 100644
--- a/ash/frame/default_header_painter.cc
+++ b/ash/frame/default_header_painter.cc
@@ -36,7 +36,7 @@ const SkColor kHeaderContentSeparatorColor = SkColorSetRGB(150, 150, 152);
 const SkColor kHeaderContentSeparatorInactiveColor =
     SkColorSetRGB(180, 180, 182);
 // The color of the frame.

[pkotwicz, 2014/10/16 23:21:22]

Nit: The default color of the frame.

-const SkColor kFrameColor = SkColorSetRGB(242, 242, 242);
+const SkColor kDefaultFrameColor = SkColorSetRGB(242, 242, 242);
 // The alpha of the inactive frame.
 const SkAlpha kInactiveFrameAlpha = 204;
 // Duration of crossfade animation for activating and deactivating frame.
@@ -79,6 +79,8 @@ DefaultHeaderPainter::DefaultHeaderPainter()
       view_(NULL),
       left_header_view_(NULL),
       left_view_x_inset_(HeaderPainterUtil::GetDefaultLeftViewXInset()),
+      active_frame_color_(kDefaultFrameColor),
+      inactive_frame_color_(kDefaultFrameColor),
       caption_button_container_(NULL),
       height_(0),
       mode_(MODE_INACTIVE),
@@ -164,7 +166,7 @@ void DefaultHeaderPainter::PaintHeader(gfx::Canvas* canvas, Mode mode) {
   SkPaint paint;
   int active_alpha = activation_animation_->CurrentValueBetween(0, 255);
   paint.setColor(color_utils::AlphaBlend(
-      kFrameColor, GetInactiveFrameColor(), active_alpha));
+      active_frame_color_, GetInactiveFrameColor(), active_alpha));
 
   TileRoundRect(canvas, paint, GetLocalBounds(), corner_radius);
 
@@ -217,6 +219,12 @@ void DefaultHeaderPainter::UpdateLeftViewXInset(int left_view_x_inset) {
   }
 }
 
+void DefaultHeaderPainter::SetFrameColors(SkColor active_frame_color,
+                                          SkColor inactive_frame_color) {
+  active_frame_color_ = active_frame_color;
+  inactive_frame_color_ = inactive_frame_color;
+}
+
 void DefaultHeaderPainter::UpdateLeftHeaderView(views::View* left_header_view) {
   left_header_view_ = left_header_view;
 }
@@ -333,7 +341,7 @@ gfx::Rect DefaultHeaderPainter::GetTitleBounds() const {
 }
 
 SkColor DefaultHeaderPainter::GetInactiveFrameColor() const {
-  SkColor color = kFrameColor;
+  SkColor color = inactive_frame_color_;
   if (!frame_->IsMaximized() && !frame_->IsFullscreen()) {
     color = SkColorSetARGB(kInactiveFrameAlpha,
                            SkColorGetR(color),