[Android WebView] OnMemoryPressure to drop tile memory

android_webview/browser/gl_view_renderer_manager.h

Index: android_webview/browser/gl_view_renderer_manager.h
diff --git a/android_webview/browser/gl_view_renderer_manager.h b/android_webview/browser/gl_view_renderer_manager.h
index 67595fbb4ae9461cd551bd355910cf174a63bb98..224fde5cc55522eeb70a4e20fbc23d705fff78b1 100644
--- a/android_webview/browser/gl_view_renderer_manager.h
+++ b/android_webview/browser/gl_view_renderer_manager.h
@@ -8,6 +8,8 @@
 #include <list>
 
 #include "base/basictypes.h"
+#include "base/memory/memory_pressure_listener.h"

[joth, 2013/10/01 11:10:46]

you probably could fwd declare MemoryPressureListener but this is ok too

[boliu, 2013/10/01 19:21:56]

Can't forward declare base::MemoryPressureListener::MemoryPressureLevel, it's an
inner enum.

+#include "base/memory/scoped_ptr.h"
 
 namespace android_webview {
 
@@ -33,6 +35,10 @@ class GLViewRendererManager {
   Key NullKey();
 
  private:
+  void OnMemoryPressure(
+      base::MemoryPressureListener::MemoryPressureLevel memory_pressure_level);
+
+  scoped_ptr<base::MemoryPressureListener> memory_pressure_listener_;
   ListType mru_list_;
 
   DISALLOW_COPY_AND_ASSIGN(GLViewRendererManager);