Remove convertToSkiaFilterLevel()

Source/platform/graphics/skia/NativeImageSkia.cpp

Index: Source/platform/graphics/skia/NativeImageSkia.cpp
diff --git a/Source/platform/graphics/skia/NativeImageSkia.cpp b/Source/platform/graphics/skia/NativeImageSkia.cpp
index 618669d9e6dfbd78fbadf9fe6febb6389bd18238..1952f6b951dfb05d047ef6497c1f33b34ea0c0c6 100644
--- a/Source/platform/graphics/skia/NativeImageSkia.cpp
+++ b/Source/platform/graphics/skia/NativeImageSkia.cpp
@@ -262,9 +262,10 @@ void NativeImageSkia::drawPattern(
     // Bicubic filter is only applied to defer-decoded images, see
     // NativeImageSkia::draw for details.
     bool useBicubicFilter = resampling == InterpolationHigh && isLazyDecoded;

[f(malita), 2014/07/25 15:20:03]

I just realized that we don't need useBicubicFilter after the change anymore -
we can fold it into the conditional below.

-
+    bool isResampled = false;

[f(malita), 2014/07/25 15:06:36]

Instead of a new flag, I think it would be clearer to compute the filter level
upfront:

SkPaint::FilterLevel filterLevel =
static_cast<SkPaint::FilterLevel>(resampling);

if (resampling == InterpolationHigh && !useBicubicFilter) {
    filterLevel = SkPaint::kNone_FilterLevel;
    ...
...
paint.setFilterLevel(filterLevel);

WDYT?

     if (resampling == InterpolationHigh && !useBicubicFilter) {
         // Do nice resampling.
+        isResampled = true;
         float scaleX = destBitmapWidth / normSrcRect.width();
         float scaleY = destBitmapHeight / normSrcRect.height();
         SkRect scaledSrcRect;
@@ -310,7 +311,7 @@ void NativeImageSkia::drawPattern(
     paint.setShader(shader.get());
     paint.setXfermode(WebCoreCompositeToSkiaComposite(compositeOp, blendMode).get());
     paint.setColorFilter(context->colorFilter());
-    paint.setFilterLevel(convertToSkiaFilterLevel(useBicubicFilter, resampling));
+    paint.setFilterLevel(isResampled ? SkPaint::kNone_FilterLevel : static_cast<SkPaint::FilterLevel>(resampling));
 
     if (isLazyDecoded)
         PlatformInstrumentation::didDrawLazyPixelRef(bitmap().getGenerationID());