[Android WebView] Implement WebSettings.{get|set}LoadWithOverviewMode

android_webview/java/src/org/chromium/android_webview/AwSettings.java

Index: android_webview/java/src/org/chromium/android_webview/AwSettings.java
diff --git a/android_webview/java/src/org/chromium/android_webview/AwSettings.java b/android_webview/java/src/org/chromium/android_webview/AwSettings.java
index 426cf1362a5abf075d84d8177bfa3ef630040e0c..ab2df55eb93daf03301e3fa3ff1d8da6cfcfda89 100644
--- a/android_webview/java/src/org/chromium/android_webview/AwSettings.java
+++ b/android_webview/java/src/org/chromium/android_webview/AwSettings.java
@@ -24,6 +24,7 @@ public class AwSettings {
     // Lock to protect all settings.
     private final Object mAwSettingsLock = new Object();
 
+    private AwContents mContents;
     private final Context mContext;
     private boolean mBlockNetworkLoads;  // Default depends on permission of embedding APK.
     private boolean mAllowContentUrlAccess = true;
@@ -35,7 +36,8 @@ public class AwSettings {
     // The native side of this object.
     private int mNativeAwSettings = 0;
 
-    public AwSettings(Context context, int nativeWebContents) {
+    public AwSettings(AwContents contents, Context context, int nativeWebContents) {
+        mContents = contents;
         mContext = context;
         mBlockNetworkLoads = mContext.checkPermission(
                 android.Manifest.permission.INTERNET,
@@ -46,6 +48,7 @@ public class AwSettings {
     }
 
     public void destroy() {
+        mContents = null;
         nativeDestroy(mNativeAwSettings);
         mNativeAwSettings = 0;
     }
@@ -160,6 +163,15 @@ public class AwSettings {
         });
     }
 
+    public void resetScrollAndScaleState() {
+        ThreadUtils.runOnUiThreadBlocking(new Runnable() {
+            @Override
+            public void run() {
+                mContents.resetScrollAndScaleState();
+            }
+        });
+    }
+
     /**
      * See {@link android.webkit.WebSettings#setNeedInitialFocus}.
      */