Forward handling of low-mem message to the content renderer client. Add APIs to handle this case.

chrome/renderer/chrome_content_renderer_client.cc

 // Copyright (c) 2011 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 "chrome/renderer/chrome_content_renderer_client.h"
 
 #include <string>
 
 #include "base/command_line.h"
 #include "base/message_loop.h"
@@ skipping 124 matching lines @@
 
 ChromeContentRendererClient::~ChromeContentRendererClient() {
   chrome::UninitializePPAPI();
 }
 
 void ChromeContentRendererClient::RenderThreadStarted() {
   chrome_observer_.reset(new ChromeRenderProcessObserver());
   extension_dispatcher_.reset(new ExtensionDispatcher());
   histogram_snapshots_.reset(new RendererHistogramSnapshots());
   net_predictor_.reset(new RendererNetPredictor());
-  spellcheck_.reset(new SpellCheck());
+  spellcheck_.reset(new SpellCheck(this));
   visited_link_slave_.reset(new VisitedLinkSlave());
   phishing_classifier_.reset(safe_browsing::PhishingClassifierFilter::Create());
 
   RenderThread* thread = RenderThread::current();
   thread->AddFilter(new DevToolsAgentFilter());
 
   thread->AddObserver(chrome_observer_.get());
   thread->AddObserver(extension_dispatcher_.get());
   thread->AddObserver(histogram_snapshots_.get());
   thread->AddObserver(phishing_classifier_.get());
@@ skipping 39 matching lines @@
 #endif
 
   ContentSettingsObserver* content_settings =
       new ContentSettingsObserver(render_view);
   new DevToolsAgent(render_view);
   new ExtensionHelper(render_view, extension_dispatcher_.get());
   new MHTMLGenerator(render_view);
   new PageLoadHistograms(render_view, histogram_snapshots_.get());
   new PrintWebViewHelper(render_view);
   new SearchBox(render_view);
-  new SpellCheckProvider(render_view, spellcheck_.get());
+  spellcheck_provider_.reset(new SpellCheckProvider(render_view,
+                                                    spellcheck_.get()));
   safe_browsing::MalwareDOMDetails::Create(render_view);
 
 #if defined(OS_MACOSX)
   new TextInputClientObserver(render_view);
 #endif  // defined(OS_MACOSX)
 
   PasswordAutofillManager* password_autofill_manager =
       new PasswordAutofillManager(render_view);
   AutofillAgent* autofill_agent = new AutofillAgent(render_view,
                                                     password_autofill_manager);
@@ skipping 357 matching lines @@
   // uninstalled.
   if (old_url == new_url) {
     bool is_extension_url = !!extensions->GetByURL(new_url);
     if (is_extension_url != extension_dispatcher_->is_extension_process())
       return true;
   }
 
   return !extensions->InSameExtent(old_url, new_url);
 }
 
+void ChromeContentRendererClient::ResetSpellCheck() {
+  RenderThread* thread = RenderThread::current();
+  if (spellcheck_.get()) {

[jam, 2011/06/21 22:59:39]

nit: this file doesn't use brace brackets for one line statements, so please
follow the convention (also below)

[Greg Billock, 2011/06/22 15:58:35]

Done.

+    thread->RemoveObserver(spellcheck_.get());
+  }
+  spellcheck_.reset(new SpellCheck(this));
+  thread->AddObserver(spellcheck_.get());
+  if (spellcheck_provider_.get()) {
+    spellcheck_provider_->SetSpellCheck(spellcheck_.get());
+  }
+}
+
 }  // namespace chrome