add a second interface to the resizer to exactly match what Chrome expects.

src/core/SkBitmapScaler.cpp

Index: src/core/SkBitmapScaler.cpp
diff --git a/src/core/SkBitmapScaler.cpp b/src/core/SkBitmapScaler.cpp
index 35e101efa964238f7f05a13de849d396a636d759..aaee600c8f8650dff77582d9cfdea3168b53c901 100644
--- a/src/core/SkBitmapScaler.cpp
+++ b/src/core/SkBitmapScaler.cpp
@@ -317,3 +317,16 @@ bool SkBitmapScaler::Resize(SkBitmap* resultPtr,
     SkASSERT(NULL != resultPtr->getPixels());
     return true;
 }
+
+// static -- simpler interface to the resizer; returns a default bitmap if scaling
+// fails for any reason.  This is the interface that Chrome expects.
+SkBitmap SkBitmapScaler::Resize(const SkBitmap& source,
+                                ResizeMethod method,
+                                float destWidth, float destHeight,
+                                SkBitmap::Allocator* allocator) {
+  SkBitmap result;
+  if (!Resize(&result, source, method, destWidth, destHeight, allocator)) {
+    return SkBitmap();
+  }
+  return result;
+}