Support InputMethodManager#updateCursorAnchorInfo for Android 5.0

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

Index: content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java
diff --git a/content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java b/content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java
index b5c2144af693d81a646d761a33aecd3982a422b3..8f77b85fb55e59e1ff241a8dc223d9091f64d5c7 100644
--- a/content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java
+++ b/content/public/android/java/src/org/chromium/content/browser/ContentViewCore.java
@@ -425,6 +425,9 @@ public class ContentViewCore
     // Cached copy of all positions and scales as reported by the renderer.
     private final RenderCoordinates mRenderCoordinates;
 
+    // Buffer to receive return value from View#getLocationOnScreen(int[]).
+    private final int[] mGetLocationOnScreenBuffer = new int[2];
+
     // Tracks whether a selection is currently active.  When applied to selected text, indicates
     // whether the last selected text is still highlighted.
     private boolean mHasSelection;
@@ -3039,6 +3042,13 @@ public class ContentViewCore
         return mFullscreenRequiredForOrientationLock;
     }
 
+    @CalledByNative
+    private long getLocationOnScreen() {
+        // TODO(yukawa): ViewPositionObserver has similar logic. Try to merge them.
+        mContainerView.getLocationInWindow(mGetLocationOnScreenBuffer);
+        return ((long) mGetLocationOnScreenBuffer[0]) << 32 | mGetLocationOnScreenBuffer[1];
+    }
+
     private native WebContents nativeGetWebContentsAndroid(long nativeContentViewCoreImpl);
 
     private native void nativeOnJavaContentViewCoreDestroyed(long nativeContentViewCoreImpl);