Revert of remove unused (by clients) SkUnitMapper (https://codereview.chromium.org/283273002/)

Reason for revert:
does not address all legacy callsites in chrome.

e.g.

[13:45:32.091872] ../../ui/native_theme/native_theme_base.cc:608:76: error: no matching function for call to ‘SkGradientShader::CreateLinear(SkPoint [3], SkColor [3], NULL, int, SkShader::TileMode, NULL)’
[13:45:32.091919]            gradient_bounds, colors, NULL, 3, SkShader::kClamp_TileMode, NULL));


Original issue's description:
> remove unused (by clients) SkUnitMapper
>
> BUG=skia:
>
> Committed: http://code.google.com/p/skia/source/detail?r=14761

R=robertphillips@google.com, scroggo@google.com, george@mozilla.com
TBR=george@mozilla.com, robertphillips@google.com, scroggo@google.com
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Author: reed@google.com

Review URL: https://codereview.chromium.org/287063009

git-svn-id: http://skia.googlecode.com/svn/trunk@14763 2bbb7eff-a529-9590-31e7-b0007b416f81

1 files changed, 5 insertions, 1 deletions

diff --git a/experimental/SkiaExamples/HelloSkiaExample.cpp b/experimental/SkiaExamples/HelloSkiaExample.cpp
index 6fd2624c18..0b6c790460 100644
--- a/experimental/SkiaExamples/HelloSkiaExample.cpp
+++ b/experimental/SkiaExamples/HelloSkiaExample.cpp
@@ -13,6 +13,7 @@
 #include "SkDraw.h"
 #include "SkGradientShader.h"
 #include "SkGraphics.h"
+#include "SkUnitMappers.h"
 
 class HelloSkia : public SkExample {
 public:
@@ -49,9 +50,12 @@ protected:
             };
             SkColor linearColors[] = {SK_ColorGREEN, SK_ColorBLACK};
 
+            SkUnitMapper* linearMapper = new SkDiscreteMapper(100);
+            SkAutoUnref lm_deleter(linearMapper);
+
             SkShader* shader = SkGradientShader::CreateLinear(
                     linearPoints, linearColors, NULL, 2,
-                    SkShader::kMirror_TileMode);
+                    SkShader::kMirror_TileMode, linearMapper);
             SkAutoUnref shader_deleter(shader);
 
             paint.setShader(shader);