Fix memory leak of "screen size bitmap" (e.g. 1.5M if 750x548) ...

skia/ext/bitmap_platform_device_mac.cc

Index: skia/ext/bitmap_platform_device_mac.cc
===================================================================
--- skia/ext/bitmap_platform_device_mac.cc	(revision 11173)
+++ skia/ext/bitmap_platform_device_mac.cc	(working copy)
@@ -146,12 +146,11 @@
                                                          int width,
                                                          int height,
                                                          bool is_opaque) {
-  void* data = malloc(height * width * 4);
-  if (!data) return NULL;
-
   SkBitmap bitmap;
   bitmap.setConfig(SkBitmap::kARGB_8888_Config, width, height);
-  bitmap.setPixels(data);
+  if (bitmap.allocPixels() != true)
+    return NULL;
+  void* data = bitmap.getPixels();
 
   // Note: The Windows implementation clears the Bitmap later on.
   // This bears mentioning since removal of this line makes the
@@ -224,7 +223,7 @@
   return data_->GetBitmapContext();
 }
 
-void BitmapPlatformDeviceMac::setMatrixClip(const SkMatrix& transform, 
+void BitmapPlatformDeviceMac::setMatrixClip(const SkMatrix& transform,
                                             const SkRegion& region) {
   data_->SetMatrixClip(transform, region);
 }