Reload Lo-Fi images inline instead of reloading the whole page

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 1375 matching lines @@
                         OnJavaScriptExecuteRequest)
     IPC_MESSAGE_HANDLER(FrameMsg_JavaScriptExecuteRequestForTests,
                         OnJavaScriptExecuteRequestForTests)
     IPC_MESSAGE_HANDLER(FrameMsg_JavaScriptExecuteRequestInIsolatedWorld,
                         OnJavaScriptExecuteRequestInIsolatedWorld)
     IPC_MESSAGE_HANDLER(FrameMsg_VisualStateRequest,
                         OnVisualStateRequest)
     IPC_MESSAGE_HANDLER(FrameMsg_SetEditableSelectionOffsets,
                         OnSetEditableSelectionOffsets)
     IPC_MESSAGE_HANDLER(FrameMsg_Reload, OnReload)
+    IPC_MESSAGE_HANDLER(FrameMsg_ReloadLoFiImages, OnReloadLoFiImages)
     IPC_MESSAGE_HANDLER(FrameMsg_TextSurroundingSelectionRequest,
                         OnTextSurroundingSelectionRequest)
     IPC_MESSAGE_HANDLER(FrameMsg_SetAccessibilityMode,
                         OnSetAccessibilityMode)
     IPC_MESSAGE_HANDLER(AccessibilityMsg_SnapshotTree,
                         OnSnapshotAccessibilityTree)
     IPC_MESSAGE_HANDLER(FrameMsg_UpdateOpener, OnUpdateOpener)
     IPC_MESSAGE_HANDLER(FrameMsg_CommitNavigation, OnCommitNavigation)
     IPC_MESSAGE_HANDLER(FrameMsg_DidUpdateSandboxFlags, OnDidUpdateSandboxFlags)
     IPC_MESSAGE_HANDLER(FrameMsg_SetFrameOwnerProperties,
@@ skipping 717 matching lines @@
                                source_frame,
                                frame_->document(),
                                channels);
   frame_->dispatchMessageEventWithOriginCheck(target_origin, msg_event);
 }
 
 void RenderFrameImpl::OnReload(bool ignore_cache) {
   frame_->reload(ignore_cache);
 }
 
+void RenderFrameImpl::OnReloadLoFiImages() {
+  is_using_lofi_ = false;
+  GetWebFrame()->reloadLoFiImages();
+}
+
 void RenderFrameImpl::OnTextSurroundingSelectionRequest(size_t max_length) {
   blink::WebSurroundingText surroundingText;
   surroundingText.initialize(frame_->selectionRange(), max_length);
 
   if (surroundingText.isNull()) {
     // |surroundingText| might not be correctly initialized, for example if
     // |frame_->selectionRange().isNull()|, in other words, if there was no
     // selection.
     Send(new FrameHostMsg_TextSurroundingSelectionResponse(
         routing_id_, base::string16(), 0, 0));
@@ skipping 983 matching lines @@
     const blink::WebHistoryItem& item,
     blink::WebHistoryCommitType commit_type) {
   TRACE_EVENT2("navigation", "RenderFrameImpl::didCommitProvisionalLoad",
                "id", routing_id_,
                "url", GetLoadingUrl().possibly_invalid_spec());
   DCHECK(!frame_ || frame_ == frame);
   DocumentState* document_state =
       DocumentState::FromDataSource(frame->dataSource());
   NavigationStateImpl* navigation_state =
       static_cast<NavigationStateImpl*>(document_state->navigation_state());
-  WebURLResponseExtraDataImpl* extra_data = GetExtraDataFromResponse(
-      frame->dataSource()->response());
-  is_using_lofi_ = extra_data && extra_data->is_using_lofi();
+  WebURLResponseExtraDataImpl* extra_data =
+      GetExtraDataFromResponse(frame->dataSource()->response());
+  // Only update LoFi state for new main frame documents. Subframes inherit from
+  // the main frame and should not change at commit time.
+  if (is_main_frame_ && !navigation_state->WasWithinSamePage()) {
+    is_using_lofi_ = extra_data && extra_data->is_using_lofi();
+  }
 
   if (proxy_routing_id_ != MSG_ROUTING_NONE) {
     RenderFrameProxy* proxy =
         RenderFrameProxy::FromRoutingID(proxy_routing_id_);
 
     // The proxy might have been detached while the provisional LocalFrame was
     // being navigated.  In that case, don't swap the frame back in the tree
     // and return early (to avoid sending confusing IPCs to the browser
     // process).  See https://crbug.com/526304 and https://crbug.com/568676.
     // TODO(nasko, alexmos): Eventually, the browser process will send an IPC
@@ skipping 2948 matching lines @@
                                     int match_count,
                                     int ordinal,
                                     const WebRect& selection_rect,
                                     bool final_status_update) {
   Send(new FrameHostMsg_Find_Reply(routing_id_, request_id, match_count,
                                    selection_rect, ordinal,
                                    final_status_update));
 }
 
 }  // namespace content