Clean up useless comments in SkScaledImageCache.h

src/core/SkBitmapCache.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBitmapCache.h"
 #include "SkRect.h"
 
@@ skipping 14 matching lines @@
 struct BitmapKey : public SkScaledImageCache::Key {
 public:
     BitmapKey(uint32_t genID, SkScalar scaleX, SkScalar scaleY, const SkIRect& bounds)
     : fGenID(genID)
     , fScaleX(scaleX)
     , fScaleY(scaleY)
     , fBounds(bounds)
     {
         this->init(sizeof(fGenID) + sizeof(fScaleX) + sizeof(fScaleY) + sizeof(fBounds));
     }
-    
+
     uint32_t    fGenID;
     SkScalar    fScaleX;
     SkScalar    fScaleY;
     SkIRect     fBounds;
 };
 
 //////////////////////////////////////////////////////////////////////////////////////////
 
 SkScaledImageCache::ID* SkBitmapCache::FindAndLock(const SkBitmap& src,
                                                    SkScalar invScaleX, SkScalar invScaleY,
@@ skipping 36 matching lines @@
 SkScaledImageCache::ID* SkMipMapCache::FindAndLock(const SkBitmap& src, const SkMipMap** result) {
     BitmapKey key(src.getGenerationID(), SK_Scalar1, SK_Scalar1, get_bounds_from_bitmap(src));
     return SkScaledImageCache::FindAndLock(key, result);
 }
 
 SkScaledImageCache::ID* SkMipMapCache::AddAndLock(const SkBitmap& src, const SkMipMap* result) {
     BitmapKey key(src.getGenerationID(), SK_Scalar1, SK_Scalar1, get_bounds_from_bitmap(src));
     return SkScaledImageCache::AddAndLock(key, result);
 }