Add inspect command to skydb

This CL adds an "inspect" command to skydb that injects the inspector module
into the page and prints some instructions for opening the inspector.

R=eseidel@chromium.org

Review URL: https://codereview.chromium.org/690433004

engine/src/flutter/tools/debugger/debugger.cc

@@ -16,6 +16,7 @@
 #include "mojo/services/window_manager/window_manager_delegate.h"
 #include "sky/tools/debugger/focus_rules.h"
 #include "sky/tools/debugger/debugger.mojom.h"
+#include "sky/viewer/services/inspector.mojom.h"
 
 namespace sky {
 
@@ -58,7 +59,7 @@ class SkyDebugger : public mojo::ApplicationDelegate,
       mojo::ViewManager* view_manager,
       mojo::View* root,
       mojo::ServiceProviderImpl* exported_services,
-      scoped_ptr<mojo::ServiceProvider> remote_service_provider) override {
+      scoped_ptr<mojo::ServiceProvider> imported_services) override {
     view_manager_ = view_manager;
 
     root_ = root;
@@ -104,10 +105,19 @@ class SkyDebugger : public mojo::ApplicationDelegate,
     // We can get Navigate commands before we've actually been
     // embedded into the view and content_ created.
     // Just save the last one.
-    if (content_)
-      content_->Embed(url);
-    else
+    if (content_) {
+      scoped_ptr<mojo::ServiceProviderImpl> exported_services(
+        new mojo::ServiceProviderImpl());
+      viewer_services_ = content_->Embed(url, exported_services.Pass());
+    } else {
       pending_url_ = url;
+    }
+  }
+
+  virtual void InjectInspector() override {
+    InspectorServicePtr inspector_service;
+    mojo::ConnectToService(viewer_services_.get(), &inspector_service);
+    inspector_service->Inject();
   }
 
   scoped_ptr<mojo::WindowManagerApp> window_manager_app_;
@@ -117,6 +127,8 @@ class SkyDebugger : public mojo::ApplicationDelegate,
   mojo::View* content_;
   std::string pending_url_;
 
+  scoped_ptr<mojo::ServiceProvider> viewer_services_;
+
   DISALLOW_COPY_AND_ASSIGN(SkyDebugger);
 };
 

engine/src/flutter/tools/debugger/debugger.mojom

@@ -6,6 +6,7 @@ module sky {
 
 interface Debugger {
   NavigateToURL(string url);
+  InjectInspector();
 };
 
 }

engine/src/flutter/tools/debugger/prompt/prompt.cc

@@ -73,6 +73,10 @@ class Prompt : public mojo::ApplicationDelegate {
       Reload();
       return true;
     }
+    if (command == "inspect") {
+      Inspect();
+      return true;
+    }
     if (command.size() == 1) {
       char c = command[0];
       if (c == 'h')
@@ -111,16 +115,25 @@ class Prompt : public mojo::ApplicationDelegate {
       << "Sky Debugger" << std::endl
       << "============" << std::endl
       << "Type a URL to load in the debugger, enter to reload." << std::endl
-      << "Commands: help   -- Help" << std::endl
-      << "          trace  -- Capture a trace" << std::endl
-      << "          reload -- Reload the current page" << std::endl
-      << "          q      -- Quit" << std::endl;
+      << "Commands: help    -- Help" << std::endl
+      << "          trace   -- Capture a trace" << std::endl
+      << "          reload  -- Reload the current page" << std::endl
+      << "          inspect -- Inspect the current page" << std::endl
+      << "          q       -- Quit" << std::endl;
   }
 
   void Reload() {
     debugger_->NavigateToURL(url_);
   }
 
+  void Inspect() {
+    debugger_->InjectInspector();
+    std::cout
+      << "Open the following URL in Chrome:" << std::endl
+      << "chrome-devtools://devtools/bundled/devtools.html?ws=localhost:9898"
+      << std::endl;
+  }
+
   void Quit() {
     std::cout << "quitting" << std::endl;
     exit(0);