Revert of add SkBitmap::installPixelRef()

include/core/SkImageInfo.h

Index: include/core/SkImageInfo.h
diff --git a/include/core/SkImageInfo.h b/include/core/SkImageInfo.h
index e0bce2a7c0596b1d2dd19e4f853269a56702ed3d..1165479f7484267e47dc5dfa2bba90e5a79dce56 100644
--- a/include/core/SkImageInfo.h
+++ b/include/core/SkImageInfo.h
@@ -109,60 +109,6 @@
     SkColorType fColorType;
     SkAlphaType fAlphaType;
 
-    static SkImageInfo Make(int width, int height, SkColorType ct, SkAlphaType at) {
-        SkASSERT(width >= 0);
-        SkASSERT(height >= 0);
-        SkImageInfo info = {
-            width, height, ct, at
-        };
-        return info;
-    }
-
-    /**
-     *  Sets colortype to the native ARGB32 type.
-     */
-    static SkImageInfo MakeN32(int width, int height, SkAlphaType at) {
-        SkASSERT(width >= 0);
-        SkASSERT(height >= 0);
-        SkImageInfo info = {
-            width, height, kPMColor_SkColorType, at
-        };
-        return info;
-    }
-
-    /**
-     *  Sets colortype to the native ARGB32 type, and the alphatype to premul.
-     */
-    static SkImageInfo MakeN32Premul(int width, int height) {
-        SkASSERT(width >= 0);
-        SkASSERT(height >= 0);
-        SkImageInfo info = {
-            width, height, kPMColor_SkColorType, kPremul_SkAlphaType
-        };
-        return info;
-    }
-
-    /**
-     *  Sets colortype to the native ARGB32 type, and the alphatype to opaque.
-     */
-    static SkImageInfo MakeN32Opaque(int width, int height) {
-        SkASSERT(width >= 0);
-        SkASSERT(height >= 0);
-        SkImageInfo info = {
-            width, height, kPMColor_SkColorType, kOpaque_SkAlphaType
-        };
-        return info;
-    }
-    
-    static SkImageInfo MakeA8(int width, int height) {
-        SkASSERT(width >= 0);
-        SkASSERT(height >= 0);
-        SkImageInfo info = {
-            width, height, kAlpha_8_SkColorType, kPremul_SkAlphaType
-        };
-        return info;
-    }
-    
     bool isOpaque() const {
         return SkAlphaTypeIsOpaque(fAlphaType);
     }