discardable_memory: Using mojo IPC to replace Chrome IPC

content/ppapi_plugin/ppapi_thread.h

Index: content/ppapi_plugin/ppapi_thread.h
diff --git a/content/ppapi_plugin/ppapi_thread.h b/content/ppapi_plugin/ppapi_thread.h
index 43bcd398bbf13a8ec71b3a97da6dd9bc44d05e97..ed41b2f7089bd02e32d4ce883cc1b3fc33c49902 100644
--- a/content/ppapi_plugin/ppapi_thread.h
+++ b/content/ppapi_plugin/ppapi_thread.h
@@ -36,6 +36,10 @@ class CommandLine;
 class FilePath;
 }
 
+namespace discardable_memory {
+class ClientDiscardableSharedMemoryManager;
+}
+
 namespace IPC {
 struct ChannelHandle;
 }
@@ -181,6 +185,9 @@ class PpapiThread : public ChildThreadImpl,
 
   variations::ChildProcessFieldTrialSyncer field_trial_syncer_;
 
+  std::unique_ptr<discardable_memory::ClientDiscardableSharedMemoryManager>
+      discardable_shared_memory_manager_;
+
   DISALLOW_IMPLICIT_CONSTRUCTORS(PpapiThread);
 };