Move WebCache memory dump provider to blink for sub-allocation edges.

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 61e0594a8072ee8dd424acb9ad668b8ebfd7add7..06d879aba14be1d6134f29fd34070a465c44f20b 100644
--- a/third_party/WebKit/Source/platform/graphics/BitmapImage.h
+++ b/third_party/WebKit/Source/platform/graphics/BitmapImage.h
@@ -36,6 +36,7 @@
 #include "platform/graphics/ImageOrientation.h"
 #include "platform/graphics/ImageSource.h"
 #include "platform/image-decoders/ImageAnimation.h"
+#include "public/platform/WebMemoryDumpProvider.h"
 #include "wtf/Forward.h"
 #include "wtf/OwnPtr.h"
 
@@ -43,7 +44,7 @@ namespace blink {
 
 template <typename T> class Timer;
 
-class PLATFORM_EXPORT BitmapImage final : public Image {
+class PLATFORM_EXPORT BitmapImage final : public Image, public WebMemoryDumpProvider {
     friend class GeneratedImage;
     friend class CrossfadeGeneratedImage;
     friend class GradientGeneratedImage;
@@ -95,6 +96,9 @@ public:
 
     ImageOrientation currentFrameOrientation();
 
+    // Overridden from WebMemoryDumpProvider.
+    bool onMemoryDump(WebMemoryDumpLevelOfDetail, WebProcessMemoryDump*) override;
+
 private:
     friend class BitmapImageTest;