Fix clang warnings on unused variable, mismatched tag, print format.

BUG: 20890093
Change-Id: I91588f481d80b69823bc9d104b8bd09167ee5373
diff --git a/libs/hwui/renderthread/RenderProxy.cpp b/libs/hwui/renderthread/RenderProxy.cpp
index c643e1d..17e47b9 100644
--- a/libs/hwui/renderthread/RenderProxy.cpp
+++ b/libs/hwui/renderthread/RenderProxy.cpp
@@ -353,7 +353,6 @@
 }
 
 void RenderProxy::overrideProperty(const char* name, const char* value) {
-    RenderThread& thread = RenderThread::getInstance();
     SETUP_TASK(overrideProperty);
     args->name = name;
     args->value = value;
diff --git a/media/jni/android_media_MediaSync.h b/media/jni/android_media_MediaSync.h
index fa5e5e0..5823057 100644
--- a/media/jni/android_media_MediaSync.h
+++ b/media/jni/android_media_MediaSync.h
@@ -26,7 +26,7 @@
 
 struct AudioPlaybackRate;
 class AudioTrack;
-struct IGraphicBufferProducer;
+class IGraphicBufferProducer;
 struct MediaClock;
 class MediaSync;
 
diff --git a/rs/jni/android_renderscript_RenderScript.cpp b/rs/jni/android_renderscript_RenderScript.cpp
index 58d0fce..a49fb76 100644
--- a/rs/jni/android_renderscript_RenderScript.cpp
+++ b/rs/jni/android_renderscript_RenderScript.cpp
@@ -1857,7 +1857,7 @@
                jintArray limits)
 {
     if (kLogApi) {
-        ALOGD("nScriptForEach, con(%p), s(%p), slot(%i) ains(%p) aout(%lli)", (RsContext)con, (void *)script, slot, ains, aout);
+        ALOGD("nScriptForEach, con(%p), s(%p), slot(%i) ains(%p) aout(%" PRId64 ")", (RsContext)con, (void *)script, slot, ains, aout);
     }
 
     jint   in_len = 0;