WIP: Introduce CompressibleString

third_party/WebKit/Source/core/frame/LocalFrame.cpp

Index: third_party/WebKit/Source/core/frame/LocalFrame.cpp
diff --git a/third_party/WebKit/Source/core/frame/LocalFrame.cpp b/third_party/WebKit/Source/core/frame/LocalFrame.cpp
index 455246e40e18ec3bbc57456cb5c97b84a929fba1..7157df93085ca372c2e931f4afc2bff2b86ef65d 100644
--- a/third_party/WebKit/Source/core/frame/LocalFrame.cpp
+++ b/third_party/WebKit/Source/core/frame/LocalFrame.cpp
@@ -910,6 +910,13 @@ void LocalFrame::updateFrameSecurityOrigin()
     frameScheduler()->setFrameOrigin(&securityOrigin);
 }
 
+void LocalFrame::compressStrings()
+{
+    V8PerIsolateData* perIsolateData = V8PerIsolateData::from(script().isolate());
+    perIsolateData->compressStrings();
+    // TODO: See children frames?

[haraken, 2015/11/24 11:15:42]

No. V8PerIsolateData is per-thread, not per-frame.

I don't think that LocalFrame is a good place to dispatch compressStrings, but
let's worry about this issue later.

[hajimehoshi, 2015/11/26 10:49:13]

I've changed to call CompressibleStringImpl::purgeMemory.

+}
+
 DEFINE_WEAK_IDENTIFIER_MAP(LocalFrame);
 
 FrameNavigationDisabler::FrameNavigationDisabler(LocalFrame& frame)