Initial inline web store install bindings.

chrome/common/extensions/extension_constants.cc

Index: chrome/common/extensions/extension_constants.cc
diff --git a/chrome/common/extensions/extension_constants.cc b/chrome/common/extensions/extension_constants.cc
index a0eb53f96d0f7b407a12baaa4d65e6891444bdcf..8b9f07c9c9c3941f81ed69e296118a18be29d415 100644
--- a/chrome/common/extensions/extension_constants.cc
+++ b/chrome/common/extensions/extension_constants.cc
@@ -4,6 +4,10 @@
 
 #include "chrome/common/extensions/extension_constants.h"
 
+#include "base/command_line.h"
+#include "base/string_util.h"
+#include "chrome/common/chrome_switches.h"
+
 namespace extension_manifest_keys {
 
 const char* kAllFrames = "all_frames";
@@ -428,4 +432,19 @@ const char* kAccessExtensionPath =
     "/usr/share/chromeos-assets/accessibility/extensions";
 const char* kChromeVoxDirectoryName = "access_chromevox";
 #endif
+
+std::string GetWebstoreLaunchURL() {
+  std::string gallery_prefix = extension_urls::kGalleryBrowsePrefix;
+  if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kAppsGalleryURL))
+    gallery_prefix = CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
+        switches::kAppsGalleryURL);
+  if (EndsWith(gallery_prefix, "/", true))
+    gallery_prefix = gallery_prefix.substr(0, gallery_prefix.length() - 1);
+  return gallery_prefix;
+}
+
+std::string GetWebstoreItemDetailURLPrefix() {
+  return GetWebstoreLaunchURL() + "/detail/";
+}
+
 }