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 12e658bee619c6abd9f161af5d9551f39a7a8ac4..7752b4a58b3b354f52402350e1af612642515399 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
@@ -16,6 +16,7 @@ import android.content.res.Configuration;
 import android.database.ContentObserver;
 import android.graphics.Bitmap;
 import android.graphics.Canvas;
+import android.graphics.Matrix;
 import android.graphics.Rect;
 import android.net.Uri;
 import android.os.Build;
@@ -2105,7 +2106,9 @@ public class ContentViewCore
             float pageScaleFactor, float minPageScaleFactor, float maxPageScaleFactor,
             float contentWidth, float contentHeight,
             float viewportWidth, float viewportHeight,
-            float controlsOffsetYCss, float contentOffsetYCss) {
+            float controlsOffsetYCss, float contentOffsetYCss,
+            boolean hasInsertionMarker, float insertionMarkerX,
+            float insertionMarkerTop, float insertionMarkerBottom) {
         TraceEvent.begin("ContentViewCore:updateFrameInfo");
         // Adjust contentWidth/Height to be always at least as big as
         // the actual viewport (as set by onSizeChanged).
@@ -2171,6 +2174,34 @@ public class ContentViewCore
         if (mBrowserAccessibilityManager != null) {
             mBrowserAccessibilityManager.notifyFrameInfoInitialized();
         }
+
+        if (mImeAdapter.isCursorAnchorInfoSupported()) {
+            int[] viewOrigin = new int[2];
+            mContainerView.getLocationOnScreen(viewOrigin);
+            float viewOriginX = viewOrigin[0];
+            float viewOriginY = viewOrigin[1];
+
+            RenderCoordinates.NormalizedPoint normalizedPoint =
+                    mRenderCoordinates.createNormalizedPoint();
+            normalizedPoint.setAbsoluteCss(0.0f, 0.0f);
+            float tx = normalizedPoint.getXPix();
+            float ty = normalizedPoint.getYPix();
+            normalizedPoint.setAbsoluteCss(1.0f, 0.0f);
+            float ax = normalizedPoint.getXPix();
+            float ay = normalizedPoint.getYPix();
+            normalizedPoint.setAbsoluteCss(0.0f, 1.0f);
+            float bx = normalizedPoint.getXPix();
+            float by = normalizedPoint.getYPix();
+
+            Matrix matrix = new Matrix();
+            matrix.setValues(new float[]{
+                    ax - tx, bx - tx, tx + viewOriginX,
+                    ay - ty, by - ty, ty + viewOriginY,
+                    0.0f, 0.0f, 1.0f});
+            mImeAdapter.updateCursorAnchorInfo(mContainerView, matrix, hasInsertionMarker,
+                    insertionMarkerX, insertionMarkerTop, insertionMarkerBottom);
+        }
+
         TraceEvent.end("ContentViewCore:updateFrameInfo");
     }
 
@@ -2183,6 +2214,9 @@ public class ContentViewCore
         mFocusedNodeEditable = (textInputType != ImeAdapter.getTextInputTypeNone());
         if (!mFocusedNodeEditable) hidePastePopup();
 
+        mImeAdapter.updateCursorAnchorInfoSource(text, selectionStart, selectionEnd,
+                compositionStart, compositionEnd);
+
         mImeAdapter.updateKeyboardVisibility(
                 nativeImeAdapterAndroid, textInputType, textInputFlags, showImeIfNeeded);