Differential updates for components.

chrome/browser/component_updater/component_updater_configurator.cc

Index: chrome/browser/component_updater/component_updater_configurator.cc
diff --git a/chrome/browser/component_updater/component_updater_configurator.cc b/chrome/browser/component_updater/component_updater_configurator.cc
index 16fa3e9619752730b02326dba994faf4c14aef10..577d6dad8c5880c813de1a0879c82d1c1ad456b2 100644
--- a/chrome/browser/component_updater/component_updater_configurator.cc
+++ b/chrome/browser/component_updater/component_updater_configurator.cc
@@ -14,11 +14,17 @@
 #include "base/strings/string_util.h"
 #include "base/win/windows_version.h"
 #include "build/build_config.h"
+#include "chrome/browser/component_updater/component_patcher.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/omaha_query_params/omaha_query_params.h"
 #include "net/url_request/url_request_context_getter.h"
 
+#if defined(OS_WIN)
+#include "chrome/browser/component_updater/component_patcher_win.h"
+#endif
+
 namespace {
+
 // Default time constants.
 const int kDelayOneMinute = 60;
 const int kDelayOneHour = kDelayOneMinute * 60;
@@ -35,9 +41,13 @@ const char kDebugRequestParam[] = "test-request";
 const char* kUrlSources[] = {
   "http://clients2.google.com/service/update2/crx",       // BANDAID
   "http://omaha.google.com/service/update2/crx",          // CWS_PUBLIC
-  "http://omaha.sandbox.google.com/service/update2/crx"   // CWS_SANDBOX
+  "http://omaha.sandbox.google.com/service/update2/crx",   // CWS_SANDBOX
 };
 
+// The url to send the completion pings to. Completion pings are sent when
+// updates have completed, either successfully or with errors.
+const char kUrlPing[] = "http://tools.google.com/service/update2";
+
 bool HasDebugValue(const std::vector<std::string>& vec, const char* test) {
   if (vec.empty())
     return 0;
@@ -59,24 +69,31 @@ class ChromeConfigurator : public ComponentUpdateService::Configurator {
   virtual int MinimumReCheckWait() OVERRIDE;
   virtual int OnDemandDelay() OVERRIDE;
   virtual GURL UpdateUrl(CrxComponent::UrlSource source) OVERRIDE;
+  virtual GURL PingUrl() OVERRIDE;
   virtual const char* ExtraRequestParams() OVERRIDE;
   virtual size_t UrlSizeLimit() OVERRIDE;
   virtual net::URLRequestContextGetter* RequestContext() OVERRIDE;
   virtual bool InProcess() OVERRIDE;
   virtual void OnEvent(Events event, int val) OVERRIDE;
+  virtual ComponentPatcher* CreateComponentPatcher() OVERRIDE;
+  virtual bool DeltasEnabled() const OVERRIDE;
 
  private:
   net::URLRequestContextGetter* url_request_getter_;
   std::string extra_info_;
   bool fast_update_;
   bool out_of_process_;
+  bool pings_enabled_;
+  bool deltas_enabled_;
 };
 
 ChromeConfigurator::ChromeConfigurator(const CommandLine* cmdline,
     net::URLRequestContextGetter* url_request_getter)
       : url_request_getter_(url_request_getter),
         extra_info_(chrome::OmahaQueryParams::Get(
-            chrome::OmahaQueryParams::CHROME)) {
+            chrome::OmahaQueryParams::CHROME)),
+        pings_enabled_(false),
+        deltas_enabled_(false) {
   // Parse comma-delimited debug flags.
   std::vector<std::string> debug_values;
   Tokenize(cmdline->GetSwitchValueASCII(switches::kComponentUpdaterDebug),
@@ -84,6 +101,14 @@ ChromeConfigurator::ChromeConfigurator(const CommandLine* cmdline,
   fast_update_ = HasDebugValue(debug_values, kDebugFastUpdate);
   out_of_process_ = HasDebugValue(debug_values, kDebugOutOfProcess);
 
+  // Parse other command-ling flags.
+  pings_enabled_ = cmdline->HasSwitch(switches::kEnableComponentUpdatePings);
+#if defined(OS_WIN)
+  deltas_enabled_ = cmdline->HasSwitch(switches::kEnableComponentUpdateDeltas);
+#else
+  deltas_enabled_ = false;
+#endif
+
   // Make the extra request params, they are necessary so omaha does
   // not deliver components that are going to be rejected at install time.
 #if defined(OS_WIN)
@@ -119,6 +144,10 @@ GURL ChromeConfigurator::UpdateUrl(CrxComponent::UrlSource source) {
   return GURL(kUrlSources[source]);
 }
 
+GURL ChromeConfigurator::PingUrl() {
+  return pings_enabled_ ? GURL(kUrlPing) : GURL();
+}
+
 const char* ChromeConfigurator::ExtraRequestParams() {
   return extra_info_.c_str();
 }
@@ -161,6 +190,18 @@ void ChromeConfigurator::OnEvent(Events event, int val) {
   }
 }
 
+ComponentPatcher* ChromeConfigurator::CreateComponentPatcher() {
+#if defined(OS_WIN)
+  return new ComponentPatcherWin();
+#else
+  return new ComponentPatcherCrossPlatform();
+#endif
+}
+
+bool ChromeConfigurator::DeltasEnabled() const {
+  return deltas_enabled_;
+}
+
 ComponentUpdateService::Configurator* MakeChromeComponentUpdaterConfigurator(
     const CommandLine* cmdline, net::URLRequestContextGetter* context_getter) {
   return new ChromeConfigurator(cmdline, context_getter);