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..77e6ff1610b04bcdfb38ead6a231d06ea68c6c8a 100644
--- a/components/infobars/core/infobar.h
+++ b/components/infobars/core/infobar.h
@@ -40,19 +40,30 @@ 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;
+  // Those globals must be initialized by the embedder before doing calling
+  // any of the method of the component via Initialize() call.
+  static int gDefaultBarTargetHeight;
+  static int gSeparatorLineHeight;
+  static int gDefaultArrowTargetHeight;
+  static int gMaximumArrowTargetHeight;
   // 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;
+  static int gDefaultArrowTargetHalfWidth;
+  static int gMaximumArrowTargetHalfWidth;
 
   explicit InfoBar(scoped_ptr<InfoBarDelegate> delegate);
   ~InfoBar() override;
 
+  // Initializes the globals by the infobar component. Must be called by the
+  // embedder to provides its own value before making any call into the
+  // component.
+  static void Initialize(int defaultBarTargetHeight,
+                         int separatorLineHeight,
+                         int defaultArrowTargetHeight,
+                         int maximumArrowTargetHeight,
+                         int defaultArrowTargetHalfWidth,
+                         int maximumArrowTargetHalfWidth);
+
   static SkColor GetTopColor(InfoBarDelegate::Type infobar_type);
   static SkColor GetBottomColor(InfoBarDelegate::Type infobar_type);