cc: Add checker-imaging support to TileManager.

skia/ext/skia_utils_base.h

Index: skia/ext/skia_utils_base.h
diff --git a/skia/ext/skia_utils_base.h b/skia/ext/skia_utils_base.h
index 6af5cf7451d1f5c68ab271ce07327de727c118da..654f55c0f214e34174f5b5982852afbab0cb4539 100644
--- a/skia/ext/skia_utils_base.h
+++ b/skia/ext/skia_utils_base.h
@@ -6,8 +6,9 @@
 #define SKIA_EXT_SKIA_UTILS_BASE_H_
 
 #include "base/pickle.h"
-#include "third_party/skia/include/ports/SkFontConfigInterface.h"
+#include "third_party/skia/include/core/SkImage.h"
 #include "third_party/skia/include/core/SkSurfaceProps.h"
+#include "third_party/skia/include/ports/SkFontConfigInterface.h"
 
 namespace skia {
 
@@ -38,6 +39,9 @@ SK_API bool WriteSkFontStyle(base::Pickle* pickle, SkFontStyle style);
 // Determine the default pixel geometry (for LCD) by querying the font host
 SK_API SkPixelGeometry ComputeDefaultPixelGeometry();
 
+// Uses safe math to compute and return the size of |image|.
+SK_API size_t SafeSizeOfImage(const SkImage* image);
+
 }  // namespace skia
 
 #endif  // SKIA_EXT_SKIA_UTILS_BASE_H_