[TTS] Add some initial signals for Tap in content.

chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchFieldTrial.java

Index: chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchFieldTrial.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchFieldTrial.java b/chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchFieldTrial.java
index db5262a3bd1952bd8b2c7fa3203c46d01dda1784..1e09f27344c7116fb8678e32fc7a33b988599a53 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchFieldTrial.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/contextualsearch/ContextualSearchFieldTrial.java
@@ -48,6 +48,10 @@ public class ContextualSearchFieldTrial {
     private static final String SCREEN_TOP_SUPPRESSION_DPS = "screen_top_suppression_dps";
     private static final String ENABLE_BAR_OVERLAP_COLLECTION = "enable_bar_overlap_collection";
     private static final String BAR_OVERLAP_SUPPRESSION_ENABLED = "enable_bar_overlap_suppression";
+    private static final String WORD_EDGE_SUPPRESSION_ENABLED = "enable_word_edge_suppression";
+    private static final String SHORT_WORD_SUPPRESSION_ENABLED = "enable_short_word_suppression";
+    private static final String WORD_NOT_LONG_ENOUGH_SUPPRESSION_ENABLED =
+            "enable_word_not_long_enough_suppression";
 
     private static final String MINIMUM_SELECTION_LENGTH = "minimum_selection_length";
 
@@ -78,6 +82,9 @@ public class ContextualSearchFieldTrial {
     private static Integer sScreenTopSuppressionDps;
     private static Boolean sIsBarOverlapCollectionEnabled;
     private static Boolean sIsBarOverlapSuppressionEnabled;
+    private static Boolean sIsWordEdgeSuppressionEnabled;
+    private static Boolean sIsShortWordSuppressionEnabled;
+    private static Boolean sIsWordNotLongEnoughSuppressionEnabled;
     private static Integer sMinimumSelectionLength;
     private static Boolean sIsOnlineDetectionDisabled;
     private static Boolean sIsAmpAsSeparateTabDisabled;
@@ -254,6 +261,38 @@ public class ContextualSearchFieldTrial {
     }
 
     /**
+     * @return Whether triggering is suppressed by a tap that's near the edge of a word.
+     */
+    static boolean isWordEdgeSuppressionEnabled() {
+        if (sIsWordEdgeSuppressionEnabled == null) {
+            sIsWordEdgeSuppressionEnabled = getBooleanParam(WORD_EDGE_SUPPRESSION_ENABLED);
+        }
+        return sIsWordEdgeSuppressionEnabled.booleanValue();
+    }
+
+    /**
+     * @return Whether triggering is suppressed by a tap that's in a short word.
+     */
+    static boolean isShortWordSuppressionEnabled() {
+        if (sIsShortWordSuppressionEnabled == null) {
+            sIsShortWordSuppressionEnabled = getBooleanParam(SHORT_WORD_SUPPRESSION_ENABLED);
+        }
+        return sIsShortWordSuppressionEnabled.booleanValue();
+    }
+
+    /**
+     * @return Whether triggering is suppressed by a tap that's in a word that's considered not
+     *         long enough.
+     */
+    static boolean isWordNotLongEnoughSuppressionEnabled() {
+        if (sIsWordNotLongEnoughSuppressionEnabled == null) {
+            sIsWordNotLongEnoughSuppressionEnabled =
+                    getBooleanParam(WORD_NOT_LONG_ENOUGH_SUPPRESSION_ENABLED);
+        }
+        return sIsWordNotLongEnoughSuppressionEnabled.booleanValue();
+    }
+
+    /**
      * @return The minimum valid selection length.
      */
     static int getMinimumSelectionLength() {