Remove unused BitmapImage::m_hasUniformFrameSize

third_party/WebKit/Source/platform/graphics/BitmapImage.h

Index: third_party/WebKit/Source/platform/graphics/BitmapImage.h
diff --git a/third_party/WebKit/Source/platform/graphics/BitmapImage.h b/third_party/WebKit/Source/platform/graphics/BitmapImage.h
index 2a650a893f4364f6de016512b4c67a9031db798d..3c4611356daf956c8252a3a35144423d09339d36 100644
--- a/third_party/WebKit/Source/platform/graphics/BitmapImage.h
+++ b/third_party/WebKit/Source/platform/graphics/BitmapImage.h
@@ -185,7 +185,6 @@ private:
     bool m_allDataReceived : 1; // Whether or not we've received all our data.
     mutable bool m_haveSize : 1; // Whether or not our |m_size| member variable has the final overall image size yet.
     bool m_sizeAvailable : 1; // Whether or not we can obtain the size of the first image frame yet from ImageIO.
-    mutable bool m_hasUniformFrameSize : 1;
     mutable bool m_haveFrameCount : 1;
 };