Adjust sizes of material design shadows based on Sebastien's feedback.

ui/gfx/skia_util.h

 // Copyright (c) 2012 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 UI_GFX_SKIA_UTIL_H_
 #define UI_GFX_SKIA_UTIL_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 57 matching lines @@
 // Creates a vertical gradient shader. The caller owns the shader.
 // Example usage to avoid leaks:
 GFX_EXPORT sk_sp<SkShader> CreateGradientShader(int start_point,
                                                 int end_point,
                                                 SkColor start_color,
                                                 SkColor end_color);
 
 // Creates a draw looper to generate |shadows|. The caller owns the draw looper.
 // NULL is returned if |shadows| is empty since no draw looper is needed in
 // this case.
+// DEPRECATED: See below. TODO(estade): remove this: crbug.com/624175
 GFX_EXPORT sk_sp<SkDrawLooper> CreateShadowDrawLooper(
     const std::vector<ShadowValue>& shadows);
 
+// Creates a draw looper to generate |shadows|. This creates a looper with the
+// correct amount of blur. Callers of the existing CreateShadowDrawLooper may
+// rely on the wrong amount of blur being applied but new code should use this
+// function.
+GFX_EXPORT sk_sp<SkDrawLooper> CreateShadowDrawLooperCorrectBlur(
+    const std::vector<ShadowValue>& shadows);
+
 // Returns true if the two bitmaps contain the same pixels.
 GFX_EXPORT bool BitmapsAreEqual(const SkBitmap& bitmap1,
                                 const SkBitmap& bitmap2);
 
 // Converts Skia ARGB format pixels in |skia| to RGBA.
 GFX_EXPORT void ConvertSkiaToRGBA(const unsigned char* skia,
                                   int pixel_width,
                                   unsigned char* rgba);
 
 // Converts a Skia floating-point value to an int appropriate for hb_position_t.
 GFX_EXPORT int SkiaScalarToHarfBuzzUnits(SkScalar value);
 
 // Converts an hb_position_t to a Skia floating-point value.
 GFX_EXPORT SkScalar HarfBuzzUnitsToSkiaScalar(int value);
 
 // Converts an hb_position_t to a float.
 GFX_EXPORT float HarfBuzzUnitsToFloat(int value);
 
 }  // namespace gfx
 
 #endif  // UI_GFX_SKIA_UTIL_H_