[Experiment] purge-and-suspend

third_party/WebKit/Source/platform/fonts/FontPlatformData.cpp

Index: third_party/WebKit/Source/platform/fonts/FontPlatformData.cpp
diff --git a/third_party/WebKit/Source/platform/fonts/FontPlatformData.cpp b/third_party/WebKit/Source/platform/fonts/FontPlatformData.cpp
index e6f42cb4a1f9505f00dca43dee4d939932aa7e01..c01ef7a68093d0a786e22ee2c4738eb5dce6aede 100644
--- a/third_party/WebKit/Source/platform/fonts/FontPlatformData.cpp
+++ b/third_party/WebKit/Source/platform/fonts/FontPlatformData.cpp
@@ -346,4 +346,10 @@ PassRefPtr<SharedBuffer> FontPlatformData::openTypeTable(SkFontTableTag tag) con
     return buffer.release();
 }
 
+void FontPlatformData::purgeMemory()
+{
+    m_typeface = nullptr; // dangerous?
+    m_harfBuzzFace = nullptr;

[esprehn, 2016/08/05 23:00:58]

Are we sure this is safe? drott@'s comments on the other patch make it sound bad

[tasak, 2016/08/08 04:47:36]

Acknowledged.
I think, drott@ is reducing tons of font memory. He has already reduced what I
pointed out.

+}
+
 } // namespace blink