PurgeMemory.

third_party/WebKit/Source/core/frame/FrameView.h

Index: third_party/WebKit/Source/core/frame/FrameView.h
diff --git a/third_party/WebKit/Source/core/frame/FrameView.h b/third_party/WebKit/Source/core/frame/FrameView.h
index ad826b8bc2befd6cba9d011e0bf1e532da114ec1..6c488991e5cfb6a76d7575095f40c3b14c94fb99 100644
--- a/third_party/WebKit/Source/core/frame/FrameView.h
+++ b/third_party/WebKit/Source/core/frame/FrameView.h
@@ -33,6 +33,7 @@
 #include "core/layout/LayoutAnalyzer.h"
 #include "core/paint/PaintInvalidationCapableScrollableArea.h"
 #include "core/paint/PaintPhase.h"
+#include "platform/MemoryPurgeController.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "platform/Widget.h"
 #include "platform/geometry/IntRect.h"
@@ -590,6 +591,8 @@ public:
     // Viewport size that should be used for viewport units (i.e. 'vh'/'vw').
     FloatSize viewportSizeForViewportUnits() const;
 
+    void purgeMemory(DeviceKind);
+
 protected:
     // Scroll the content via the compositor.
     bool scrollContentsFastPath(const IntSize& scrollDelta);