Add font_scale_factor_quirk pref.

ui/android/java/src/org/chromium/ui/gfx/DeviceDisplayInfo.java

Index: ui/android/java/src/org/chromium/ui/gfx/DeviceDisplayInfo.java
diff --git a/ui/android/java/src/org/chromium/ui/gfx/DeviceDisplayInfo.java b/ui/android/java/src/org/chromium/ui/gfx/DeviceDisplayInfo.java
index 088c9c2476e7f2781572be7a56e1482965716dd3..895d3472ca7bc446f0d3363b0e9d512c1a359433 100644
--- a/ui/android/java/src/org/chromium/ui/gfx/DeviceDisplayInfo.java
+++ b/ui/android/java/src/org/chromium/ui/gfx/DeviceDisplayInfo.java
@@ -115,6 +115,15 @@ public class DeviceDisplayInfo {
       return getMetrics().density;
   }
 
+  /**
+   * @return Smallest screen size in density-independent pixels that the
+   *         application will see, regardless of orientation.
+   */
+  @CalledByNative
+  private int getSmallestDIPWidth() {
+      return mAppContext.getResources().getConfiguration().smallestScreenWidthDp;
+  }
+
   private Display getDisplay() {
       return mWinManager.getDefaultDisplay();
   }