diff --git a/mozglue/linker/BaseElf.cpp b/mozglue/linker/BaseElf.cpp
index 7cefecee03e..e3cb8053878 100644
--- a/mozglue/linker/BaseElf.cpp
+++ b/mozglue/linker/BaseElf.cpp
@@ -22,6 +22,12 @@ BaseElf::Hash(const char *symbol)
   return h;
 }
 
+void *
+BaseElf::GetSymbolPtr(const char *symbol) const
+{
+  return GetSymbolPtr(symbol, Hash(symbol));
+}
+
 void *
 BaseElf::GetSymbolPtr(const char *symbol, unsigned long hash) const
 {
@@ -53,3 +59,22 @@ BaseElf::GetSymbol(const char *symbol, unsigned long hash) const
   }
   return nullptr;
 }
+
+bool
+BaseElf::Contains(void *addr) const
+{
+  return base.Contains(addr);
+}
+
+#ifdef __ARM_EABI__
+const void *
+BaseElf::FindExidx(int *pcount) const
+{
+  if (arm_exidx) {
+    *pcount = arm_exidx.numElements();
+    return arm_exidx;
+  }
+  *pcount = 0;
+  return nullptr;
+}
+#endif
diff --git a/mozglue/linker/BaseElf.h b/mozglue/linker/BaseElf.h
index 18091f6d15d..0c9dff6dc92 100644
--- a/mozglue/linker/BaseElf.h
+++ b/mozglue/linker/BaseElf.h
@@ -44,12 +44,12 @@ protected:
     * Inherited from LibHandle. Those are temporary and are not supposed to
     * be used.
     */
-   virtual void *GetSymbolPtr(const char *symbol) const { return NULL; };
-   virtual bool Contains(void *addr) const { return false; };
+   virtual void *GetSymbolPtr(const char *symbol) const;
+   virtual bool Contains(void *addr) const;
    virtual void *GetBase() const { return GetPtr(0); }
 
 #ifdef __ARM_EABI__
-  virtual const void *FindExidx(int *pcount) const { return NULL; };
+  virtual const void *FindExidx(int *pcount) const;
 #endif
 
   virtual Mappable *GetMappable() const { return NULL; };
@@ -96,6 +96,11 @@ public:
 
   /* Symbol table */
   UnsizedArray<Elf::Sym> symtab;
+
+#ifdef __ARM_EABI__
+  /* ARM.exidx information used by FindExidx */
+  Array<uint32_t[2]> arm_exidx;
+#endif
 };
 
 #endif /* BaseElf_h */
diff --git a/mozglue/linker/CustomElf.cpp b/mozglue/linker/CustomElf.cpp
index 64c8a48439e..8bfc4e52298 100644
--- a/mozglue/linker/CustomElf.cpp
+++ b/mozglue/linker/CustomElf.cpp
@@ -278,12 +278,6 @@ CustomElf::~CustomElf()
   ElfLoader::Singleton.Forget(this);
 }
 
-void *
-CustomElf::GetSymbolPtr(const char *symbol) const
-{
-  return BaseElf::GetSymbolPtr(symbol, Hash(symbol));
-}
-
 void *
 CustomElf::GetSymbolPtrInDeps(const char *symbol) const
 {
@@ -359,25 +353,6 @@ CustomElf::GetSymbolPtrInDeps(const char *symbol) const
   return nullptr;
 }
 
-bool
-CustomElf::Contains(void *addr) const
-{
-  return base.Contains(addr);
-}
-
-#ifdef __ARM_EABI__
-const void *
-CustomElf::FindExidx(int *pcount) const
-{
-  if (arm_exidx) {
-    *pcount = arm_exidx.numElements();
-    return arm_exidx;
-  }
-  *pcount = 0;
-  return nullptr;
-}
-#endif
-
 void
 CustomElf::stats(const char *when) const
 {
diff --git a/mozglue/linker/CustomElf.h b/mozglue/linker/CustomElf.h
index 0c51c68ce2d..c7242fb465e 100644
--- a/mozglue/linker/CustomElf.h
+++ b/mozglue/linker/CustomElf.h
@@ -35,13 +35,6 @@ public:
    * Inherited from LibHandle/BaseElf
    */
   virtual ~CustomElf();
-  virtual void *GetSymbolPtr(const char *symbol) const;
-  virtual bool Contains(void *addr) const;
-  virtual void *GetBase() const { return GetPtr(0); }
-
-#ifdef __ARM_EABI__
-  virtual const void *FindExidx(int *pcount) const;
-#endif
 
 protected:
   virtual Mappable *GetMappable() const;
@@ -161,11 +154,6 @@ private:
   bool initialized;
 
   bool has_text_relocs;
-
-#ifdef __ARM_EABI__
-  /* ARM.exidx information used by FindExidx */
-  Array<uint32_t[2]> arm_exidx;
-#endif
 };
 
 #endif /* CustomElf_h */