Fix google-explicit-constructor warnings in frameworks/base

* Add explicit keyword to conversion constructors.
* Add NOLINT to implicit conversion constructors.

Bug: 28341362
Test: build with clang-tidy
Change-Id: Ie4d37072ab57d1662d18db4de1c8577247f43337
diff --git a/libs/hwui/OpenGLRenderer.h b/libs/hwui/OpenGLRenderer.h
old mode 100755
new mode 100644
index 402f6ed..2acbdc3
--- a/libs/hwui/OpenGLRenderer.h
+++ b/libs/hwui/OpenGLRenderer.h
@@ -114,7 +114,7 @@
  */
 class OpenGLRenderer : public CanvasStateClient {
 public:
-    OpenGLRenderer(RenderState& renderState);
+    explicit OpenGLRenderer(RenderState& renderState);
     virtual ~OpenGLRenderer();
 
     /**