Introduce FeatureUtilities#isContextualSuggestionsBottomSheetEnabled

Contextual suggestions should only be enabled for phones and when modern
is enabled. A follow-up CL will also add other relevant checks.

BUG=823987

Change-Id: Iadf323534a03b65fe27b1d8fdc64f625096db334
Reviewed-on: https://chromium-review.googlesource.com/982244
Commit-Queue: Theresa <twellington@chromium.org>
Reviewed-by: Ted Choc <tedchoc@chromium.org>
Cr-Commit-Position: refs/heads/master@{#546234}

chrome/android/java/src/org/chromium/chrome/browser/ChromeActivity.java

@@ -1249,7 +1249,7 @@ public abstract class ChromeActivity extends AsyncInitializationActivity
         VrShellDelegate.onNativeLibraryAvailable();
         super.finishNativeInitialization();
 
-        if (FeatureUtilities.isChromeDuplexEnabled()) {
+        if (FeatureUtilities.isContextualSuggestionsBottomSheetEnabled()) {
             ViewGroup coordinator = (ViewGroup) findViewById(R.id.coordinator);
             getLayoutInflater().inflate(R.layout.bottom_sheet, coordinator);
             mBottomSheet = coordinator.findViewById(R.id.bottom_sheet);
@@ -1262,13 +1262,10 @@ public abstract class ChromeActivity extends AsyncInitializationActivity
 
             mFadingBackgroundView.addObserver(mBottomSheet);
 
-            if (ChromeFeatureList.isEnabled(
-                        ChromeFeatureList.CONTEXTUAL_SUGGESTIONS_BOTTOM_SHEET)) {
             mContextualSuggestionsCoordinator = new ContextualSuggestionsCoordinator(
                     this, mBottomSheetController, getTabModelSelector());
         }
     }
-    }
 
     /**
      * @return Whether native initialization has been completed for this activity.

chrome/android/java/src/org/chromium/chrome/browser/util/FeatureUtilities.java

@@ -323,6 +323,15 @@ public class FeatureUtilities {
         return sIsChromeModernDesignEnabled;
     }
 
+    /** @return Whether the contextual suggestions bottom sheet is enabled. */
+    public static boolean isContextualSuggestionsBottomSheetEnabled() {
+        // TODO(twellington): Also check for enterprise users and users with history sync enabled
+        // without encryption.
+        return !DeviceFormFactor.isTablet() && isChromeModernDesignEnabled()
+                && ChromeFeatureList.isEnabled(
+                           ChromeFeatureList.CONTEXTUAL_SUGGESTIONS_BOTTOM_SHEET);
+    }
+
     private static native void nativeSetCustomTabVisible(boolean visible);
     private static native void nativeSetIsInMultiWindowMode(boolean isInMultiWindowMode);
 }