http://trac.webkit.org/changeset/52075 added JavaScriptCore/runtime/StringBuilder.h WebCore/platform/text/StringBuilder.h already exists. The Android build is not set up to handle multiple include files with the same name. Should multiple files with the same name be avoided? I'm not aware of any other examples of this (other than config.h). If not, the Android build system will need updating to handle this.
Created attachment 46503 [details] Patch 1 for Bug 33623 Updates Android build system
Landed manually as http://trac.webkit.org/changeset/53254