[DevTools] Issue zoom from DevToolsWindow instead of browser commands.

chrome/browser/devtools/devtools_embedder_message_dispatcher.cc

Index: chrome/browser/devtools/devtools_embedder_message_dispatcher.cc
diff --git a/chrome/browser/devtools/devtools_embedder_message_dispatcher.cc b/chrome/browser/devtools/devtools_embedder_message_dispatcher.cc
index 21d34647b63bea653bed8e184e5552cb355d18aa..3fd221db4fef3f9164e77e7b3d8ba261d9f5e945 100644
--- a/chrome/browser/devtools/devtools_embedder_message_dispatcher.cc
+++ b/chrome/browser/devtools/devtools_embedder_message_dispatcher.cc
@@ -234,6 +234,15 @@ DevToolsEmbedderMessageDispatcher::DevToolsEmbedderMessageDispatcher(
   RegisterHandler("searchInPath",
       BindToListParser(base::Bind(&Delegate::SearchInPath,
                                   base::Unretained(delegate))));
+  RegisterHandler("zoomIn",
+      BindToListParser(base::Bind(&Delegate::ZoomIn,
+                                  base::Unretained(delegate))));
+  RegisterHandler("zoomOut",
+      BindToListParser(base::Bind(&Delegate::ZoomOut,
+                                  base::Unretained(delegate))));
+  RegisterHandler("resetZoom",
+      BindToListParser(base::Bind(&Delegate::ResetZoom,
+                                  base::Unretained(delegate))));
 }
 
 DevToolsEmbedderMessageDispatcher::~DevToolsEmbedderMessageDispatcher() {}