Add ChromeBrowserMainExtraParts for non main parts.

chrome/browser/chrome_browser_main.h

Index: chrome/browser/chrome_browser_main.h
diff --git a/chrome/browser/chrome_browser_main.h b/chrome/browser/chrome_browser_main.h
index 867b14cb0f49f90f34bf76ce44a8fc9de6f3b89f..b2be37f02f103b6ebafe063bada053d6bd72890d 100644
--- a/chrome/browser/chrome_browser_main.h
+++ b/chrome/browser/chrome_browser_main.h
@@ -9,6 +9,7 @@
 #include "base/basictypes.h"
 #include "base/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/memory/scoped_vector.h"
 #include "base/metrics/field_trial.h"
 #include "base/tracked_objects.h"
 #include "chrome/browser/first_run/first_run.h"
@@ -17,6 +18,7 @@
 
 class BrowserInit;
 class BrowserProcessImpl;
+class ChromeBrowserMainExtraParts;
 class FieldTrialSynchronizer;
 class HistogramSynchronizer;
 class MetricsService;
@@ -43,23 +45,14 @@ class ChromeBrowserMainParts : public content::BrowserMainParts {
  public:
   virtual ~ChromeBrowserMainParts();
 
-  // Constructs metrics service and does related initialization, including
-  // creation of field trials. Call only after labs have been converted to
-  // switches.
-  MetricsService* SetupMetricsAndFieldTrials(PrefService* local_state);
-
-  const content::MainFunctionParams& parameters() const {
-    return parameters_;
-  }
-  const CommandLine& parsed_command_line() const {
-    return parsed_command_line_;
-  }
+  // Add additional ChromeBrowserMainExtraParts.
+  virtual void AddParts(ChromeBrowserMainExtraParts* parts);
 
  protected:
   explicit ChromeBrowserMainParts(
       const content::MainFunctionParams& parameters);
 
-  // content::BrowserParts overrides
+  // content::BrowserMainParts overrides.
   virtual void PreEarlyInitialization() OVERRIDE;
   virtual void PostEarlyInitialization() OVERRIDE;
   virtual void ToolkitInitialized() OVERRIDE;
@@ -72,6 +65,15 @@ class ChromeBrowserMainParts : public content::BrowserMainParts {
   // Displays a warning message that we can't find any locale data files.
   virtual void ShowMissingLocaleMessageBox() = 0;
 
+  const content::MainFunctionParams& parameters() const {
+    return parameters_;
+  }
+  const CommandLine& parsed_command_line() const {
+    return parsed_command_line_;
+  }
+
+  Profile* profile() { return profile_; }
+
  private:
   // Methods for |EarlyInitialization()| ---------------------------------------
 
@@ -104,6 +106,11 @@ class ChromeBrowserMainParts : public content::BrowserMainParts {
 
   // Methods for |SetupMetricsAndFieldTrials()| --------------------------------
 
+  // Constructs metrics service and does related initialization, including
+  // creation of field trials. Call only after labs have been converted to
+  // switches.
+  MetricsService* SetupMetricsAndFieldTrials(PrefService* local_state);
+
   static MetricsService* InitializeMetrics(
       const CommandLine& parsed_command_line,
       const PrefService* local_state);
@@ -115,7 +122,6 @@ class ChromeBrowserMainParts : public content::BrowserMainParts {
   // Methods for Main Message Loop -------------------------------------------
 
   int PreMainMessageLoopRunImpl();
-  void StartBrowserOrUITask();
 
   // Members initialized on construction ---------------------------------------
 
@@ -137,6 +143,9 @@ class ChromeBrowserMainParts : public content::BrowserMainParts {
   // SetupMetricsAndFieldTrials is called.
   scoped_ptr<base::FieldTrialList> field_trial_list_;
 
+  // Vector of additional ChromeBrowserMainExtraParts.
+  ScopedVector<ChromeBrowserMainExtraParts> chrome_extra_parts_;
+
   // Members initialized after / released before main_message_loop_ ------------
 
   scoped_ptr<BrowserInit> browser_init_;