Fix OSK flickering issue

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 69d11cf978e8029adf93e805b3e2ad632d3cddc1..d3040c9862e0d1561fc1aef03f3ccdd5ff9297b0 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
@@ -748,8 +748,8 @@ public class ContentViewCore implements
     }
 
     private ImeAdapter createImeAdapter() {
-        return new ImeAdapter(mInputMethodManagerWrapper,
-                new ImeAdapter.ImeAdapterDelegate() {
+        return new ImeAdapter(
+                mInputMethodManagerWrapper, new ImeAdapter.ImeAdapterDelegate() {
                     @Override
                     public void onImeEvent() {
                         mPopupZoomer.hide(true);
@@ -812,8 +812,7 @@ public class ContentViewCore implements
                             }
                         };
                     }
-                }
-        );
+                });
     }
 
     /**
@@ -2473,8 +2472,8 @@ public class ContentViewCore implements
             boolean focusedNodeIsPassword = (textInputType == TextInputType.PASSWORD);
             if (!focusedNodeEditable) hidePastePopup();
 
-            mImeAdapter.updateKeyboardVisibility(
-                    nativeImeAdapterAndroid, textInputType, textInputFlags, showImeIfNeeded);
+            mImeAdapter.attach(nativeImeAdapterAndroid);
+            mImeAdapter.updateKeyboardVisibility(textInputType, textInputFlags, showImeIfNeeded);
 
             if (mInputConnection != null) {
                 mInputConnection.updateState(text, selectionStart, selectionEnd, compositionStart,
@@ -2664,7 +2663,6 @@ public class ContentViewCore implements
     }
 
     private boolean canPaste() {
-        if (!mFocusedNodeEditable) return false;
         return ((ClipboardManager) mContext.getSystemService(
                 Context.CLIPBOARD_SERVICE)).hasPrimaryClip();
     }