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/FrameInfo.h b/libs/hwui/FrameInfo.h
index f8013ab..b2eaf13 100644
--- a/libs/hwui/FrameInfo.h
+++ b/libs/hwui/FrameInfo.h
@@ -65,7 +65,7 @@
 
 class ANDROID_API UiFrameInfoBuilder {
 public:
-    UiFrameInfoBuilder(int64_t* buffer) : mBuffer(buffer) {
+    explicit UiFrameInfoBuilder(int64_t* buffer) : mBuffer(buffer) {
         memset(mBuffer, 0, UI_THREAD_FRAME_INFO_SIZE * sizeof(int64_t));
     }