Revert of Change to sRGB default for codec generated images.

src/core/SkImageInfo.cpp

 /*
  * Copyright 2010 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkImageInfo.h"
 #include "SkImageInfoPriv.h"
 #include "SkReadBuffer.h"
 #include "SkWriteBuffer.h"
 
 // Indicate how images and gradients should interpret colors by default.
-bool gDefaultProfileIsSRGB = true;
+bool gDefaultProfileIsSRGB;
 
 SkColorProfileType SkDefaultColorProfile() {
     return gDefaultProfileIsSRGB ? kSRGB_SkColorProfileType
                                  : kLinear_SkColorProfileType;
 }
 
 static bool profile_type_is_valid(SkColorProfileType profileType) {
     return (profileType >= 0) && (profileType <= kLastEnum_SkColorProfileType);
 }
 
@@ skipping 98 matching lines @@
     }
     // here x,y are either 0 or negative
     fPixels = ((char*)fPixels - y * fRowBytes - x * fInfo.bytesPerPixel());
     // the intersect may have shrunk info's logical size
     fInfo = fInfo.makeWH(srcR.width(), srcR.height());
     fX = srcR.x();
     fY = srcR.y();
 
     return true;
 }