drawBitmap* cleanup

src/core/SkDevice.cpp

Index: src/core/SkDevice.cpp
===================================================================
--- src/core/SkDevice.cpp	(revision 10315)
+++ src/core/SkDevice.cpp	(working copy)
@@ -371,18 +371,8 @@
 }
 
 void SkDevice::drawBitmap(const SkDraw& draw, const SkBitmap& bitmap,
-                          const SkIRect* srcRect,
                           const SkMatrix& matrix, const SkPaint& paint) {
-    SkBitmap        tmp;    // storage if we need a subset of bitmap
-    const SkBitmap* bitmapPtr = &bitmap;
-
-    if (srcRect) {
-        if (!bitmap.extractSubset(&tmp, *srcRect)) {
-            return;     // extraction failed
-        }
-        bitmapPtr = &tmp;
-    }
-    draw.drawBitmap(*bitmapPtr, matrix, paint);
+    draw.drawBitmap(bitmap, matrix, paint);
 }
 
 void SkDevice::drawBitmapRect(const SkDraw& draw, const SkBitmap& bitmap,
@@ -449,7 +439,7 @@
         // We can go faster by just calling drawBitmap, which will concat the
         // matrix with the CTM, and try to call drawSprite if it can. If not,
         // it will make a shader and call drawRect, as we do below.
-        this->drawBitmap(draw, *bitmapPtr, NULL, matrix, paint);
+        this->drawBitmap(draw, *bitmapPtr, matrix, paint);
         return;
     }