Add toString() to Display.HDRCapabilities

HdrCapablities in adb shell dumpsys display and in log messages appear
as android.view.Display$HdrCapabilities@49f9cd26. This change adds a
toString() method so HDR Capabilities are visualized in a nice way.

Test: adb shell dumpsys display
Change-Id: I0800ac4f615ca733d0901654184d884dd2b81752

1 files changed, 9 insertions, 0 deletions

diff --git a/core/java/android/view/Display.java b/core/java/android/view/Display.java
index 03e68b0058b2..ba2509302094 100644
--- a/core/java/android/view/Display.java
+++ b/core/java/android/view/Display.java
@@ -1525,5 +1525,14 @@ public final class Display {
         public int describeContents() {
             return 0;
         }
+
+        @Override
+        public String toString() {
+            return "HdrCapabilities{"
+                    + "mSupportedHdrTypes=" + Arrays.toString(mSupportedHdrTypes)
+                    + ", mMaxLuminance=" + mMaxLuminance
+                    + ", mMaxAverageLuminance=" + mMaxAverageLuminance
+                    + ", mMinLuminance=" + mMinLuminance + '}';
+        }
     }
 }