Let content_unittests almost build with the components build on android

content/browser/renderer_host/java/java_bound_object.cc

Index: content/browser/renderer_host/java/java_bound_object.cc
diff --git a/content/browser/renderer_host/java/java_bound_object.cc b/content/browser/renderer_host/java/java_bound_object.cc
index 4ea4878295d69dfb043efe47ef9ded3469801446..3dab6cbef419796e4c7f3f201dcafa70d903cdd6 100644
--- a/content/browser/renderer_host/java/java_bound_object.cc
+++ b/content/browser/renderer_host/java/java_bound_object.cc
@@ -194,6 +194,8 @@ bool CallJNIMethod(jobject object, const JavaType& return_type, jmethodID id,
       // Take a copy and pass ownership to the variant. We must allocate using
       // NPN_MemAlloc, to match NPN_ReleaseVariant, which uses NPN_MemFree.
       size_t length = str.length();
+      // TODO(thakis): This causes linker errors in a components build. Figure
+      // out what to do.
       char* buffer = static_cast<char*>(NPN_MemAlloc(length));
       str.copy(buffer, length, 0);
       STRINGN_TO_NPVARIANT(buffer, length, *result);