Remove dependency from infobars component to the embedder

components/infobars/core/infobar.h

Index: components/infobars/core/infobar.h
diff --git a/components/infobars/core/infobar.h b/components/infobars/core/infobar.h
index 6124d880c784c45ce94abb5922d5108b9f52314a..feec5f6bb230f4c21c74155776e398168986cd48 100644
--- a/components/infobars/core/infobar.h
+++ b/components/infobars/core/infobar.h
@@ -19,6 +19,19 @@ namespace infobars {
 class InfoBarContainer;
 class InfoBarManager;
 
+// InfoBarConstants holds embedder specific constants used by InfoBar
+// animation implementation.
+struct InfoBarConstants {
+  int separator_line_height;
+  int default_bar_target_height;
+  int default_arrow_target_height;
+  int maximum_arrow_target_height;
+  // The half-width (see comments on |arrow_half_width_| below) scales to its
+  // default and maximum values proportionally to how the height scales to its.
+  int default_arrow_target_half_width;
+  int maximum_arrow_target_half_width;
+};
+
 // InfoBar is a cross-platform base class for an infobar "view" (in the MVC
 // sense), which owns a corresponding InfoBarDelegate "model".  Typically,
 // a caller will call XYZInfoBarDelegate::Create() and pass in the
@@ -40,17 +53,7 @@ class InfoBar : public gfx::AnimationDelegate {
   typedef InfoBar AddedDetails;
   typedef std::pair<InfoBar*, bool> RemovedDetails;
 
-  // Platforms must define these.
-  static const int kDefaultBarTargetHeight;
-  static const int kSeparatorLineHeight;
-  static const int kDefaultArrowTargetHeight;
-  static const int kMaximumArrowTargetHeight;
-  // The half-width (see comments on |arrow_half_width_| below) scales to its
-  // default and maximum values proportionally to how the height scales to its.
-  static const int kDefaultArrowTargetHalfWidth;
-  static const int kMaximumArrowTargetHalfWidth;
-
-  explicit InfoBar(scoped_ptr<InfoBarDelegate> delegate);
+  InfoBar(scoped_ptr<InfoBarDelegate> delegate);
   ~InfoBar() override;
 
   static SkColor GetTopColor(InfoBarDelegate::Type infobar_type);