Checking if frame is complete and access duration doesn't need a decode

Source/core/platform/graphics/ImageSource.h

Index: Source/core/platform/graphics/ImageSource.h
diff --git a/Source/core/platform/graphics/ImageSource.h b/Source/core/platform/graphics/ImageSource.h
index 1a2165a2a14ee897e5a0a8d9451f4e8c9030332d..ffa844aff932f9233626d244a54822127af30aac 100644
--- a/Source/core/platform/graphics/ImageSource.h
+++ b/Source/core/platform/graphics/ImageSource.h
@@ -127,9 +127,9 @@ public:
     // see comments on clear() above.
     PassNativeImagePtr createFrameAtIndex(size_t);
 
-    float frameDurationAtIndex(size_t);
-    bool frameHasAlphaAtIndex(size_t); // Whether or not the frame actually used any alpha.
-    bool frameIsCompleteAtIndex(size_t); // Whether or not the frame is completely decoded.
+    float frameDurationAtIndex(size_t) const;
+    bool frameHasAlphaAtIndex(size_t) const; // Whether or not the frame actually used any alpha.
+    bool frameIsCompleteAtIndex(size_t) const; // Whether or not the frame is completely decoded or fully received.

[Peter Kasting, 2013/04/23 21:43:20]

Nit: Shouldn't this just be "...is fully received"?  We don't care about the
decode state anymore.

[Alpha Left Google, 2013/04/25 23:02:44]

Done.

     ImageOrientation orientationAtIndex(size_t) const; // EXIF image orientation
 
     // Return the number of bytes in the decoded frame. If the frame is not yet