Resize only the virtual viewport when the OSK triggers a resize.

content/public/android/java/src/org/chromium/content/browser/ContentViewClient.java

Index: content/public/android/java/src/org/chromium/content/browser/ContentViewClient.java
diff --git a/content/public/android/java/src/org/chromium/content/browser/ContentViewClient.java b/content/public/android/java/src/org/chromium/content/browser/ContentViewClient.java
index ccf76b05cd88a8579f65f51ea35705c373c54366..57990f64720fc49bda1b003faa2036fb0c15f474 100644
--- a/content/public/android/java/src/org/chromium/content/browser/ContentViewClient.java
+++ b/content/public/android/java/src/org/chromium/content/browser/ContentViewClient.java
@@ -213,4 +213,44 @@ public class ContentViewClient {
     public int getDesiredHeightMeasureSpec() {
         return UNSPECIFIED_MEASURE_SPEC;
     }
+
+    /**
+     * Returns the left system window inset in pixels. The system window inset represents the area
+     * of a full-screen window that is partially or fully obscured by the status bar, navigation
+     * bar, IME or other system windows.
+     * @return The left system window inset.
+     */
+    public int getSystemWindowInsetLeft() {
+        return 0;
+    }
+
+    /**
+     * Returns the top system window inset in pixels. The system window inset represents the area of
+     * a full-screen window that is partially or fully obscured by the status bar, navigation bar,
+     * IME or other system windows.
+     * @return The top system window inset.
+     */
+    public int getSystemWindowInsetTop() {
+        return 0;
+    }
+
+    /**
+     * Returns the right system window inset in pixels. The system window inset represents the area
+     * of a full-screen window that is partially or fully obscured by the status bar, navigation
+     * bar, IME or other system windows.
+     * @return The right system window inset.
+     */
+    public int getSystemWindowInsetRight() {
+        return 0;
+    }
+
+    /**
+     * Returns the bottom system window inset in pixels. The system window inset represents the area
+     * of a full-screen window that is partially or fully obscured by the status bar, navigation
+     * bar, IME or other system windows.
+     * @return The bottom system window inset.
+     */
+    public int getSystemWindowInsetBottom() {
+        return 0;
+    }
 }