Confirm the compostion text on TAP gesture.

content/browser/renderer_host/ime_adapter_android.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/renderer_host/ime_adapter_android.h"
 
 #include <algorithm>
 #include <android/input.h>
 #include <vector>
 
@@ skipping 209 matching lines @@
   java_ime_adapter_ = JavaObjectWeakGlobalRef(env, java_object);
 }
 
 void ImeAdapterAndroid::CancelComposition() {
   base::android::ScopedJavaLocalRef<jobject> obj =
       java_ime_adapter_.get(AttachCurrentThread());
   if (!obj.is_null())
     Java_ImeAdapter_cancelComposition(AttachCurrentThread(), obj.obj());
 }
 
+bool ImeAdapterAndroid::HasComposition() {

[jdduke (slow), 2015/03/18 19:50:08]

Would it be worth simply moving all the FinishComposition logic here? There's
already a CancelComposition and FinishComposingText here so that should fit in
nicely.

+  base::android::ScopedJavaLocalRef<jobject> obj =
+      java_ime_adapter_.get(AttachCurrentThread());
+  if (!obj.is_null())
+    return Java_ImeAdapter_hasComposition(AttachCurrentThread(), obj.obj());
+  return false;
+}
+
 void ImeAdapterAndroid::FocusedNodeChanged(bool is_editable_node) {
   base::android::ScopedJavaLocalRef<jobject> obj =
       java_ime_adapter_.get(AttachCurrentThread());
   if (!obj.is_null()) {
     Java_ImeAdapter_focusedNodeChanged(AttachCurrentThread(),
                                        obj.obj(),
                                        is_editable_node);
   }
 }
 
@@ skipping 91 matching lines @@
 WebContents* ImeAdapterAndroid::GetWebContents() {
   RenderWidgetHostImpl* rwh = GetRenderWidgetHostImpl();
   if (!rwh)
     return NULL;
   if (!rwh->IsRenderView())
     return NULL;
   return WebContents::FromRenderViewHost(RenderViewHost::From(rwh));
 }
 
 }  // namespace content