Some code style cleanup under src/app.

app/gfx/color_utils.h

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef APP_GFX_COLOR_UTILS_H_
 #define APP_GFX_COLOR_UTILS_H_
 
 #include "third_party/skia/include/core/SkColor.h"
 
 class SkBitmap;
 
 namespace color_utils {
 
 // Represents set of CIE XYZ tristimulus values.
 struct CIE_XYZ {
   double X;
-  double Y; // luminance
+  double Y;  // luminance
   double Z;
 };
 
 // Represents a L*a*b* color value
 struct LabColor {
   int L;
   int a;
   int b;
 };
 
@@ skipping 23 matching lines @@
 // Builds a histogram based on the Y' of the Y'UV representation of
 // this image.
 void BuildLumaHistogram(SkBitmap* bitmap, int histogram[256]);
 
 // Create a color from a base color and a specific alpha value.
 SkColor SetColorAlpha(SkColor c, SkAlpha alpha);
 
 // Gets a Windows system color as a SkColor
 SkColor GetSysSkColor(int which);
 
-} // namespace color_utils
+}  // namespace color_utils
 
-#endif  // #ifndef APP_GFX_COLOR_UTILS_H_
+#endif  // APP_GFX_COLOR_UTILS_H_