WebApp splashscreen: add UMA to record how a splashscreen is constructed.

base/android/java/src/org/chromium/base/metrics/RecordHistogram.java

Index: base/android/java/src/org/chromium/base/metrics/RecordHistogram.java
diff --git a/base/android/java/src/org/chromium/base/metrics/RecordHistogram.java b/base/android/java/src/org/chromium/base/metrics/RecordHistogram.java
index a47360e849108e9ec0fde16676be21f5d640948f..96fc4feedbff34cf3a21ae0797291dfab0bcaf62 100644
--- a/base/android/java/src/org/chromium/base/metrics/RecordHistogram.java
+++ b/base/android/java/src/org/chromium/base/metrics/RecordHistogram.java
@@ -64,6 +64,16 @@ public class RecordHistogram {
 
     /**
      * Records a sample in a count histogram. This is the Java equivalent of the
+     * UMA_HISTOGRAM_COUNTS_1000 C++ macro.
+     * @param name name of the histogram
+     * @param sample sample to be recorded, at least 1 and at most 999
+     */
+    public static void recordCount1000Histogram(String name, int sample) {
+        recordCustomCountHistogram(name, sample, 1, 1000, 50);
+    }
+
+    /**
+     * Records a sample in a count histogram. This is the Java equivalent of the
      * UMA_HISTOGRAM_CUSTOM_COUNTS C++ macro.
      * @param name name of the histogram
      * @param sample sample to be recorded, at least |min| and at most |max| - 1