Do not calculate composition bounds until IME requests.

content/public/android/java/src/org/chromium/content/browser/input/ImeAdapter.java

Index: content/public/android/java/src/org/chromium/content/browser/input/ImeAdapter.java
diff --git a/content/public/android/java/src/org/chromium/content/browser/input/ImeAdapter.java b/content/public/android/java/src/org/chromium/content/browser/input/ImeAdapter.java
index 8c1ae7a6652c3371c7a374969838f42c4d5f1805..ade6398bbb375e7330f2b6b55340e0d7d0b206f2 100644
--- a/content/public/android/java/src/org/chromium/content/browser/input/ImeAdapter.java
+++ b/content/public/android/java/src/org/chromium/content/browser/input/ImeAdapter.java
@@ -18,6 +18,7 @@ import android.view.KeyEvent;
 import android.view.View;
 import android.view.inputmethod.BaseInputConnection;
 import android.view.inputmethod.EditorInfo;
+import android.view.inputmethod.InputConnection;
 
 import org.chromium.base.Log;
 import org.chromium.base.VisibleForTesting;
@@ -192,8 +193,15 @@ public class ImeAdapter {
                 mViewEmbedder.getAttachedView(), this, mTextInputType, mTextInputFlags,
                 mLastSelectionStart, mLastSelectionEnd, outAttrs));
         if (DEBUG_LOGS) Log.w(TAG, "onCreateInputConnection: " + mInputConnection);
+
         if (mCursorAnchorInfoController != null) {
-            mCursorAnchorInfoController.resetMonitoringState();
+            mCursorAnchorInfoController.onRequestCursorUpdates(
+                    false /* not an immediate request */, false /* disable monitoring */,
+                    mViewEmbedder.getAttachedView());
+        }
+        if (mNativeImeAdapterAndroid != 0) {
+            nativeRequestCursorUpdate(mNativeImeAdapterAndroid,
+                    false /* not an immediate request */, false /* disable monitoring */);
         }
         return mInputConnection;
     }
@@ -674,8 +682,16 @@ public class ImeAdapter {
      * Notified when IME requested Chrome to change the cursor update mode.
      */
     public boolean onRequestCursorUpdates(int cursorUpdateMode) {
+        final boolean immediateRequest =
+                (cursorUpdateMode & InputConnection.CURSOR_UPDATE_IMMEDIATE) != 0;
+        final boolean monitorRequest =
+                (cursorUpdateMode & InputConnection.CURSOR_UPDATE_MONITOR) != 0;
+
+        if (mNativeImeAdapterAndroid != 0) {
+            nativeRequestCursorUpdate(mNativeImeAdapterAndroid, immediateRequest, monitorRequest);
+        }
         if (mCursorAnchorInfoController == null) return false;
-        return mCursorAnchorInfoController.onRequestCursorUpdates(cursorUpdateMode,
+        return mCursorAnchorInfoController.onRequestCursorUpdates(immediateRequest, monitorRequest,
                 mViewEmbedder.getAttachedView());
     }
 
@@ -731,7 +747,8 @@ public class ImeAdapter {
     @CalledByNative
     private void setCharacterBounds(float[] characterBounds) {
         if (mCursorAnchorInfoController == null) return;
-        mCursorAnchorInfoController.setCompositionCharacterBounds(characterBounds);
+        mCursorAnchorInfoController.setCompositionCharacterBounds(characterBounds,
+                mViewEmbedder.getAttachedView());
     }
 
     @CalledByNative
@@ -763,5 +780,7 @@ public class ImeAdapter {
             int before, int after);
     private native void nativeResetImeAdapter(long nativeImeAdapterAndroid);
     private native boolean nativeRequestTextInputStateUpdate(long nativeImeAdapterAndroid);
+    private native void nativeRequestCursorUpdate(long nativeImeAdapterAndroid,
+            boolean immediateRequest, boolean monitorRequest);
     private native boolean nativeIsImeThreadEnabled(long nativeImeAdapterAndroid);
 }