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

chrome/renderer/chrome_content_renderer_client.cc

Index: chrome/renderer/chrome_content_renderer_client.cc
diff --git a/chrome/renderer/chrome_content_renderer_client.cc b/chrome/renderer/chrome_content_renderer_client.cc
index 21b8e41ed0e0dacd66ceb4fc50a8056c1ff84e2f..0671f70ccc3d4f7f1173dae5a7932cbd6841d292 100644
--- a/chrome/renderer/chrome_content_renderer_client.cc
+++ b/chrome/renderer/chrome_content_renderer_client.cc
@@ -142,7 +142,7 @@ void ChromeContentRendererClient::RenderThreadStarted() {
   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());
 
@@ -202,7 +202,8 @@ void ChromeContentRendererClient::RenderViewCreated(RenderView* 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)
@@ -580,4 +581,16 @@ bool ChromeContentRendererClient::CrossesExtensionExtents(WebFrame* frame,
   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