Changes to content/ to facilitate new zoom extension API

content/renderer/render_thread_impl.cc

Index: content/renderer/render_thread_impl.cc
diff --git a/content/renderer/render_thread_impl.cc b/content/renderer/render_thread_impl.cc
index 31575157bc08ba1173709418b40c4d29471526b8..e5e84b9ca2d64dc23478303e2e845ff3a9c7fe72 100644
--- a/content/renderer/render_thread_impl.cc
+++ b/content/renderer/render_thread_impl.cc
@@ -173,25 +173,29 @@ const int kMaxRasterThreads = 64;
 
 // Keep the global RenderThreadImpl in a TLS slot so it is impossible to access
 // incorrectly from the wrong thread.
-base::LazyInstance<base::ThreadLocalPointer<RenderThreadImpl> >
-    lazy_tls = LAZY_INSTANCE_INITIALIZER;
+base::LazyInstance<base::ThreadLocalPointer<RenderThreadImpl> > lazy_tls =
+    LAZY_INSTANCE_INITIALIZER;
 
 class RenderViewZoomer : public RenderViewVisitor {
  public:
   RenderViewZoomer(const std::string& scheme,
                    const std::string& host,
-                   double zoom_level) : scheme_(scheme),
-                                        host_(host),
-                                        zoom_level_(zoom_level) {
-  }
+                   double zoom_level,
+                   const std::set<int>& exceptions)
+      : scheme_(scheme),
+        host_(host),
+        zoom_level_(zoom_level),
+        exceptions_(exceptions) {}
 
   virtual bool Visit(RenderView* render_view) OVERRIDE {
     WebView* webview = render_view->GetWebView();
     WebDocument document = webview->mainFrame()->document();
 
     // Don't set zoom level for full-page plugin since they don't use the same
-    // zoom settings.
-    if (document.isPluginDocument())
+    // zoom settings. RenderViews associated with tabs in special zoom
+    // modes (listed in |exceptions_|) should also not be zoomed.
+    if (document.isPluginDocument() ||
+        exceptions_.count(render_view->GetRoutingID()))
       return true;
     GURL url(document.url());
     // Empty scheme works as wildcard that matches any scheme,
@@ -206,6 +210,7 @@ class RenderViewZoomer : public RenderViewVisitor {
   const std::string scheme_;
   const std::string host_;
   const double zoom_level_;
+  const std::set<int> exceptions_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderViewZoomer);
 };
@@ -1212,10 +1217,12 @@ void RenderThreadImpl::DoNotNotifyWebKitOfModalLoop() {
   notify_webkit_of_modal_loop_ = false;
 }
 
-void RenderThreadImpl::OnSetZoomLevelForCurrentURL(const std::string& scheme,
-                                                   const std::string& host,
-                                                   double zoom_level) {
-  RenderViewZoomer zoomer(scheme, host, zoom_level);
+void RenderThreadImpl::OnSetZoomLevelForCurrentURL(
+    const std::string& scheme,
+    const std::string& host,
+    double zoom_level,
+    const std::set<int>& exceptions) {
+  RenderViewZoomer zoomer(scheme, host, zoom_level, exceptions);
   RenderView::ForEach(&zoomer);
 }