[Android] Restart input only once on focus change

content/renderer/render_frame_impl.cc

 // Copyright 2013 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/renderer/render_frame_impl.h"
 
 #include <map>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 5126 matching lines @@
   gfx::Rect node_bounds;
   if (!node.isNull() && node.isElementNode()) {
     WebElement element = const_cast<WebNode&>(node).to<WebElement>();
     blink::WebRect rect = element.boundsInViewport();
     GetRenderWidget()->convertViewportToWindow(&rect);
     is_editable = element.isEditable();
     node_bounds = gfx::Rect(rect);
   }
   Send(new FrameHostMsg_FocusedNodeChanged(routing_id_, is_editable,
                                            node_bounds));
+  // Ensures that further text input state can be sent even when previously
+  // focused input and the newly focused input share the exact same state.
+  GetRenderWidget()->ClearTextInputState();
 
   for (auto& observer : observers_)
     observer.FocusedNodeChanged(node);
 }
 
 void RenderFrameImpl::FocusedNodeChangedForAccessibility(const WebNode& node) {
   if (render_accessibility())
     render_accessibility()->AccessibilityFocusedNodeChanged(node);
 }
 
@@ skipping 1710 matching lines @@
   // event target. Potentially a Pepper plugin will receive the event.
   // In order to tell whether a plugin gets the last mouse event and which it
   // is, we set |pepper_last_mouse_event_target_| to null here. If a plugin gets
   // the event, it will notify us via DidReceiveMouseEvent() and set itself as
   // |pepper_last_mouse_event_target_|.
   pepper_last_mouse_event_target_ = nullptr;
 #endif
 }
 
 }  // namespace content