Moved theme related state from BrowserInstantController to InstantService.

chrome/common/instant_types.h

Index: chrome/common/instant_types.h
diff --git a/chrome/common/instant_types.h b/chrome/common/instant_types.h
index 3826075092af7e1b6060198c6632c96c92f5d818..b8ef033864a385dddaade52fa4136dab64f7deca 100644
--- a/chrome/common/instant_types.h
+++ b/chrome/common/instant_types.h
@@ -130,6 +130,7 @@ enum ThemeBackgroundImageAlignment {
   THEME_BKGRND_IMAGE_ALIGN_TOP,
   THEME_BKGRND_IMAGE_ALIGN_RIGHT,
   THEME_BKGRND_IMAGE_ALIGN_BOTTOM,
+  THEME_BKGRND_INVALID_ALIGNMENT,
 };
 
 // The tiling of the theme background image.
@@ -138,12 +139,17 @@ enum ThemeBackgroundImageTiling {
   THEME_BKGRND_IMAGE_REPEAT_X,
   THEME_BKGRND_IMAGE_REPEAT_Y,
   THEME_BKGRND_IMAGE_REPEAT,
+  THEME_BKGRND_INVALID_REPEAT,
 };
 
 struct ThemeBackgroundInfo {
   ThemeBackgroundInfo();
   ~ThemeBackgroundInfo();
 
+  void Initialize();
+  bool IsValid() const;
+  bool operator==(const ThemeBackgroundInfo& rhs) const;
+
   // The theme background color in RGBA format where the R, G, B and A values
   // are between 0 and 255 inclusive and always valid.
   int color_r;