[Android] Add supportMultipleWindows setting

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

Index: content/public/android/java/src/org/chromium/content/browser/ContentSettings.java
diff --git a/content/public/android/java/src/org/chromium/content/browser/ContentSettings.java b/content/public/android/java/src/org/chromium/content/browser/ContentSettings.java
index df314e0979857d83683dec727b966ae975e7870c..92dededd5d426f61dc4b74f44d29b64ba35550d2 100644
--- a/content/public/android/java/src/org/chromium/content/browser/ContentSettings.java
+++ b/content/public/android/java/src/org/chromium/content/browser/ContentSettings.java
@@ -74,6 +74,7 @@ public class ContentSettings {
     private boolean mAllowUniversalAccessFromFileURLs = false;
     private boolean mAllowFileAccessFromFileURLs = false;
     private boolean mJavaScriptCanOpenWindowsAutomatically = false;
+    private boolean mSupportMultipleWindows = false;
     private PluginState mPluginState = PluginState.OFF;
     private boolean mDomStorageEnabled = false;
 
@@ -887,6 +888,34 @@ public class ContentSettings {
     }
 
     /**
+     * Tells the WebView whether it supports multiple windows. True means
+     * that {@link WebChromeClient#onCreateWindow(WebView, boolean,
+     * boolean, Message)} is implemented by the host application.
+     */
+    public void setSupportMultipleWindows(boolean support) {
+        assert mCanModifySettings;
+        synchronized (mContentSettingsLock) {
+            if (mSupportMultipleWindows != support) {
+                mSupportMultipleWindows = support;
+                mEventHandler.syncSettingsLocked();
+            }
+        }
+    }
+
+    /**
+     * Gets whether the WebView is supporting multiple windows.
+     *
+     * @return true if the WebView is supporting multiple windows. This means
+     *         that {@link WebChromeClient#onCreateWindow(WebView, boolean,
+     *         boolean, Message)} is implemented by the host application.
+     */
+    public boolean supportMultipleWindows() {
+        synchronized (mContentSettingsLock) {
+            return mSupportMultipleWindows;
+        }
+    }
+
+    /**
      * Sets whether the DOM storage API is enabled. The default value is false.
      *
      * @param flag true if the ContentView should use the DOM storage API