Revert "Make libbcc public."

This reverts commit 80232dd16c0affb2afae01cde6c94abf23ac1ba8.
diff --git a/lib/ExecutionEngine/BCCContext.cpp b/lib/ExecutionEngine/BCCContext.cpp
new file mode 100644
index 0000000..62995ed
--- /dev/null
+++ b/lib/ExecutionEngine/BCCContext.cpp
@@ -0,0 +1,65 @@
+/*
+ * Copyright 2012, The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "BCCContext.h"
+
+#include <new>
+
+#include "BCCContextImpl.h"
+#include "DebugHelper.h"
+#include "Source.h"
+
+using namespace bcc;
+
+static BCCContext *GlobalContext = NULL;
+
+BCCContext *BCCContext::GetOrCreateGlobalContext() {
+  if (GlobalContext == NULL) {
+    GlobalContext = new (std::nothrow) BCCContext();
+    if (GlobalContext == NULL) {
+      ALOGE("Out of memory when allocate global BCCContext!");
+    }
+  }
+  return GlobalContext;
+}
+
+void BCCContext::DestroyGlobalContext() {
+  delete GlobalContext;
+  GlobalContext = NULL;
+}
+
+BCCContext::BCCContext() : mImpl(new BCCContextImpl(*this)) { }
+
+BCCContext::~BCCContext() {
+  delete mImpl;
+  if (this == GlobalContext) {
+    // We're deleting the context returned from GetOrCreateGlobalContext().
+    // Reset the GlobalContext.
+    GlobalContext = NULL;
+  }
+}
+
+void BCCContext::addSource(Source &pSource)
+{ mImpl->mOwnSources.insert(&pSource); }
+
+void BCCContext::removeSource(Source &pSource)
+{ mImpl->mOwnSources.erase(&pSource); }
+
+llvm::LLVMContext &BCCContext::getLLVMContext()
+{ return mImpl->mLLVMContext; }
+
+const llvm::LLVMContext &BCCContext::getLLVMContext() const
+{ return mImpl->mLLVMContext; }